diff --git a/hosts/miku.nix b/hosts/miku.nix
index 377cb34..690bb3c 100644
--- a/hosts/miku.nix
+++ b/hosts/miku.nix
@@ -38,6 +38,8 @@
     cantata
     newsflash
     sublime-music-no-test
+    psst
+    staruml-wrapped
   ];
 
   ptw = {
diff --git a/lib/mkSystem.nix b/lib/mkSystem.nix
index 2d8ea02..f60c0d1 100644
--- a/lib/mkSystem.nix
+++ b/lib/mkSystem.nix
@@ -43,6 +43,7 @@ in inputs.nixpkgs.lib.nixosSystem {
         emacs.overlay
         (import ../packages)
         (import ../overlays/simple.nix)
+        (import ../overlays/sandbox.nix)
       ];
     }
 
diff --git a/packages/sandbox.nix b/lib/sandbox.nix
similarity index 100%
rename from packages/sandbox.nix
rename to lib/sandbox.nix
diff --git a/overlays/default.nix b/overlays/default.nix
index fad7e51..7ea717f 100644
--- a/overlays/default.nix
+++ b/overlays/default.nix
@@ -3,4 +3,5 @@
 {
   simple = import ./simple.nix;
   surface = import ./surface.nix pkgs;
+  sandbox = import ./sandbox.nix;
 }
diff --git a/overlays/sandbox.nix b/overlays/sandbox.nix
new file mode 100644
index 0000000..afda5c5
--- /dev/null
+++ b/overlays/sandbox.nix
@@ -0,0 +1,59 @@
+final: prev:
+
+let
+  wrapInSandbox = prev.callPackage ../lib/sandbox.nix {};
+in {
+  discord-wrapped = wrapInSandbox {
+    name = "discord";
+    package = prev.discord;
+    #package = discord-system-electron;
+    binaryName = "discord";
+    mountInHome = [ ".config/discord" ".config/BetterDiscord" ];
+    additionalBlacklist = [ "/mnt" ];
+    chdirTo = "/home/$USER";
+
+    version = "1.0.1";
+    copyIntoSandbox = [ "share/pixmaps" ];
+    desktopFileArgs = {
+      name = "Discord (wrapped)";
+      #exec = "discord";
+      icon = "discord";
+      desktopName = "Discord (wrapped)";
+      genericName = "Instant Messenger";
+      categories = "Network;InstantMessaging;";
+    };
+  };
+
+  minecraft-wrapped = wrapInSandbox {
+    name = "minecraft-launcher";
+    package = prev.minecraft;
+    binaryName = "minecraft-launcher";
+    mountInHome = [ ".local/share/minecraft" ".minecraft" ];
+    additionalBlacklist = [ "/mnt" ];
+    chdirTo = "/home/$USER";
+  };
+
+  steam-wrapped = wrapInSandbox {
+    name = "steam";
+    package = prev.steam;
+    binaryName = "steam";
+    mountInHome = [ ".steam" ".local/share/Steam" ];
+    additionalBlacklist = [ "/mnt" ];
+    additionalMounts = [ "/mnt/Storage/Games/SteamLibrary" ];
+    chdirTo = "/home/$USER";
+    extraEnv = {
+      DRI_PRIME = "1";
+    };
+
+    copyIntoSandbox = [ "/share" ];
+  };
+
+  android-studio-wrapped = wrapInSandbox {
+    name = "android-studio";
+    package = prev.android-studio;
+    binaryName = "android-studio";
+    additionalBlacklist = [ "/mnt" ];
+    mountInHome = [ "Development/Personal/Android" ".android" ];
+    chdirTo = "/home/$USER";
+  };
+}
diff --git a/overlays/simple.nix b/overlays/simple.nix
index 1f5fe9a..241510b 100644
--- a/overlays/simple.nix
+++ b/overlays/simple.nix
@@ -67,4 +67,26 @@ final: prev:
        })
     ];
   });
+
+  # TODO: Remove once upstream has a new version tagged
+  kasts-git = prev.libsForQt5.kasts.overrideAttrs (old: {
+    src = let
+      commit = "b39be0118ef6ff587b433af185c584f3d5bcec30";
+    in builtins.fetchTarball {
+      url = "https://invent.kde.org/plasma-mobile/kasts/-/archive/${commit}/kasts-${commit}.tar.gz";
+      sha256 = "06myymbwj89357cpg7phha1x8q84mlhcy4f44pdkqmg7lkd5a6df";
+    };
+
+    buildInputs = old.buildInputs ++ [ prev.taglib prev.libsForQt5.qtkeychain ];
+  });
+
+  xournalpp-git = prev.xournalpp.overrideAttrs (old: {
+    version = "1.1.1";
+    src = prev.fetchFromGitHub {
+      owner = "bhennion";
+      repo = "xournalpp";
+      rev = "5d1545b0c4303e45b4ddf4ef8a1565eba822a9af";
+      sha256 = "1d17lvydlny9pvaxa9xy53wxs7i6d563lp5r9g3r1xpgnb7zli8v";
+    };
+  });
 }
diff --git a/packages/default.nix b/packages/default.nix
index ef4c8e9..118d17f 100644
--- a/packages/default.nix
+++ b/packages/default.nix
@@ -9,7 +9,6 @@ let
     extraStartupArgs = "--enable-features=UseOzonePlatform --ozone-platform=wayland";
     #extraStartupArgs = "--enable-features=UseOzonePlatform --ozone-platform=wayland --enable-features=WebRTCPipeWireCapturer";
   };
-  wrapInSandbox = prev.callPackage ./sandbox.nix {};
 in {
 key-mapper = prev.callPackage ./tools/games/key-mapper {};
   vfio-isolate = prev.callPackage ./tools/virtualisation/vfio-isolate {};
@@ -31,90 +30,12 @@ key-mapper = prev.callPackage ./tools/games/key-mapper {};
     pySmartDL = pySmartDL;
     cfscrape = cfscrape;
   };
-  discord-wrapped = wrapInSandbox {
-    name = "discord";
-    package = prev.discord;
-    #package = discord-system-electron;
-    binaryName = "discord";
-    mountInHome = [ ".config/discord" ".config/BetterDiscord" ];
-    additionalBlacklist = [ "/mnt" ];
-    chdirTo = "/home/$USER";
-
-    version = "1.0.1";
-    copyIntoSandbox = [ "share/pixmaps" ];
-    desktopFileArgs = {
-      name = "Discord (wrapped)";
-      #exec = "discord";
-      icon = "discord";
-      desktopName = "Discord (wrapped)";
-      genericName = "Instant Messenger";
-      categories = "Network;InstantMessaging;";
-    };
-  };
 
   sddm-sugar-dark = prev.callPackage ./sddm-sugar-dark {};
   
   surface-control = prev.callPackage ./tools/system/surface-control {};
 
   trackma = prev.callPackage ./tools/video/trackma {};
-
-  multimc-wrapped = wrapInSandbox {
-    name = "multimc";
-    package = prev.multimc.override {
-      jdk = prev.jdk11;
-      jdk8 = prev.jdk11;
-    };
-    binaryName = "multimc";
-    mountInHome = [ ".local/share/multimc" ];
-    additionalBlacklist = [ "/mnt" ];
-    chdirTo = "/home/$USER";
-   #extraEnv = {
-   #  DRI_PRIME = "1";
-   #};
-  };
-
-  minecraft-wrapped = wrapInSandbox {
-    name = "minecraft-launcher";
-    package = prev.minecraft;
-    binaryName = "minecraft-launcher";
-    mountInHome = [ ".local/share/minecraft" ".minecraft" ];
-    additionalBlacklist = [ "/mnt" ];
-    chdirTo = "/home/$USER";
-  };
-  
-  steam-wrapped = wrapInSandbox {
-    name = "steam";
-    package = prev.steam;
-    binaryName = "steam";
-    mountInHome = [ ".steam" ".local/share/Steam" ];
-    additionalBlacklist = [ "/mnt" ];
-    additionalMounts = [ "/mnt/Storage/Games/SteamLibrary" ];
-    chdirTo = "/home/$USER";
-    extraEnv = {
-      DRI_PRIME = "1";
-    };
-
-    copyIntoSandbox = [ "/share" ];
-  };
-
-  android-studio-wrapped = wrapInSandbox {
-    name = "android-studio";
-    package = prev.android-studio;
-    binaryName = "android-studio";
-    additionalBlacklist = [ "/mnt" ];
-    mountInHome = [ "Development/Personal/Android" ".android" ];
-    chdirTo = "/home/$USER";
-  };
-
-  xournalpp-git = prev.xournalpp.overrideAttrs (old: {
-    version = "1.1.1";
-    src = prev.fetchFromGitHub {
-      owner = "bhennion";
-      repo = "xournalpp";
-      rev = "5d1545b0c4303e45b4ddf4ef8a1565eba822a9af";
-      sha256 = "1d17lvydlny9pvaxa9xy53wxs7i6d563lp5r9g3r1xpgnb7zli8v";
-    };
-  });
   
   gajim-mainwindow = prev.callPackage ./applications/networking/instant-messengers/gajim {
     nbxmpp = prev.python3Packages.nbxmpp.overrideAttrs (old: {
@@ -133,20 +54,10 @@ key-mapper = prev.callPackage ./tools/games/key-mapper {};
   # TODO: Remove once NixOS has version 0.11.16 in their repos
   sublime-music-no-test = prev.callPackage ./applications/audio/sublime-music {};
 
-  # TODO: Remove once upstream has a new version tagged
-  kasts-git = prev.libsForQt5.kasts.overrideAttrs (old: {
-    src = let
-      commit = "b39be0118ef6ff587b433af185c584f3d5bcec30";
-    in builtins.fetchTarball {
-      url = "https://invent.kde.org/plasma-mobile/kasts/-/archive/${commit}/kasts-${commit}.tar.gz";
-      sha256 = "06myymbwj89357cpg7phha1x8q84mlhcy4f44pdkqmg7lkd5a6df";
-    };
-
-    buildInputs = old.buildInputs ++ [ prev.taglib prev.libsForQt5.qtkeychain ];
-  });
-
   sound-gambit = prev.callPackage tools/audio/sound-gambit {};
   ebu-norm = prev.callPackage tools/audio/ebu-norm {};
 
   payload-dumper = prev.callPackage tools/system/payload-dumper {};
+
+  psst = prev.callPackage tools/audio/psst {};
 }
diff --git a/packages/tools/audio/psst/default.nix b/packages/tools/audio/psst/default.nix
new file mode 100644
index 0000000..5641324
--- /dev/null
+++ b/packages/tools/audio/psst/default.nix
@@ -0,0 +1,42 @@
+{ lib
+, rustPlatform
+, fetchFromGitHub
+, pkg-config
+, cairo
+, openssl
+, alsa-lib
+, dbus
+, gtk3
+}:
+
+rustPlatform.buildRustPackage rec {
+  pname = "psst";
+  version = "1.2.1";
+
+  src = fetchFromGitHub {
+    owner = "jpochyla";
+    repo = "psst";
+    rev = "8f142a3232a706537c8477bff43d2e52309f6b78";
+    sha256 = "00pdijd70rq98lrrfgh6pzqa6w3pp49lmpzaviw7nrgfl7l6j3v0";
+  };
+  
+  cargoSha256 = "sha256-/nbYi7n58D8V3qa9rStg7JfGh4sAhTxC2niFFW5Ta34=";
+
+  nativeBuildInputs = [ pkg-config ];
+
+  buildInputs = [ cairo openssl gtk3 alsa-lib dbus ];
+
+  postInstall = ''
+    # Install the desktop file
+    mkdir -p $out/share
+    cp .pkg/psst.desktop $out/share/
+  '';
+  
+  meta = with lib; {
+    description = "A modern Volume Mixer for PulseAudio";
+    homepage = "https://github.com/Aurailus/Myxer";
+    license = licenses.gpl3Only;
+    maintainers = with maintainers; [ erin ];
+    platforms = platforms.linux;
+  };
+}