diff --git a/modules/home-manager/desktop.nix b/modules/home-manager/desktop.nix
index fcfda384..c2c86512 100644
--- a/modules/home-manager/desktop.nix
+++ b/modules/home-manager/desktop.nix
@@ -8,6 +8,7 @@ in {
     graphics.enable =
       lib.mkEnableOption "installations of graphics-related apps";
     audio.enable = lib.mkEnableOption "installations of audio-related apps";
+    multimedia.enable = lib.mkEnableOption "installations for opening multimedia files";
   };
 
   config = lib.mkIf cfg.enable (lib.mkMerge [
@@ -41,5 +42,15 @@ in {
         soundService = "pipewire-pulse";
       };
     })
+
+    (lib.mkIf cfg.multimedia.enable {
+      home.packages = with pkgs; [
+        mpv # The modern VLC.
+        brave # The only web browser that gives me money.
+        foliate # The prettier PDF viewer.
+        sioyek # The researcher's PDF viewer.
+        thunderbird # Email checks.
+      ];
+    })
   ]);
 }
diff --git a/modules/home-manager/dev.nix b/modules/home-manager/dev.nix
index 02a526fc..c43ca21c 100644
--- a/modules/home-manager/dev.nix
+++ b/modules/home-manager/dev.nix
@@ -17,6 +17,7 @@ in {
         gopass # An improved version of the password manager for hipsters.
         perl534Packages.vidir # Bulk rename for your organizing needs.
         zellij # A modern tmux?
+        tealdeer # An easy cop-out for basic help.
         lf # File manager in the terminal, really.
 
         # Coreutils replacement.
diff --git a/modules/home-manager/research.nix b/modules/home-manager/research.nix
index 2c2017d9..9e0b8edb 100644
--- a/modules/home-manager/research.nix
+++ b/modules/home-manager/research.nix
@@ -13,6 +13,7 @@ in {
       internetarchive # All of the potential vintage collection of questionable materials at your fingertips.
       newsboat # Reading news easily on the command line?
       qbittorrent # The pirate's toolkit for downloading Linux ISOs.
+      yt-dlp # The general purpose video downloader.
       zotero # It's actually good at archiving despite not being a researcher myself.
     ];
   };
diff --git a/modules/nixos/desktop.nix b/modules/nixos/desktop.nix
index be2ff6f5..bae98ff5 100644
--- a/modules/nixos/desktop.nix
+++ b/modules/nixos/desktop.nix
@@ -125,6 +125,7 @@ in {
         timers.clean-log = {
           description = "Weekly log cleanup";
           documentation = [ "man:journalctl(1)" ];
+          wantedBy = [ "multi-user.target" ];
           timerConfig = {
             OnCalendar = "weekly";
             Persistent = true;
diff --git a/modules/nixos/hardware-setup/backup-archive.nix b/modules/nixos/hardware-setup/backup-archive.nix
index ab7712c3..b505a2b9 100644
--- a/modules/nixos/hardware-setup/backup-archive.nix
+++ b/modules/nixos/hardware-setup/backup-archive.nix
@@ -33,7 +33,7 @@ in {
     };
 
     services.borgbackup.jobs.external-storage = {
-      dateFormat = "%F-%H-%M-%S-%z";
+      dateFormat = "+%F-%H-%M-%S-%z";
       doInit = false;
       removableDevice = true;
       paths = [
diff --git a/modules/nixos/themes/a-happy-gnome/default.nix b/modules/nixos/themes/a-happy-gnome/default.nix
index 09fd2592..d9eef2b3 100644
--- a/modules/nixos/themes/a-happy-gnome/default.nix
+++ b/modules/nixos/themes/a-happy-gnome/default.nix
@@ -63,10 +63,19 @@ in
       # It is required for custom menus in extensions.
       gnome-menus
 
+      # Good ol' unofficial preferences tool.
+      gnome.gnome-tweaks
+
       # My preferred extensions.
       gnomeExtensions.arcmenu
       gnomeExtensions.gsconnect
       gnomeExtensions.x11-gestures
+      gnomeExtensions.kimpanel
+      gnomeExtensions.runcat
+      gnomeExtensions.just-perfection
+
+      # TODO: Use from nixpkgs once fly-pie is fixed.
+      gnome-shell-extension-fly-pie
 
       # Setting up Pop shell.
       gnome-shell-extension-pop-shell