Stick any program to the icon tray

TrayconizerHere comes a small freeware utility program that does only one thing, but does it right. Trayconizer is used to put any Windows program into the icon tray (not only the ones allowing it explicitly).

For example, you can put the NotePad program in the tray icon with a single shortcut containing something like:

C:\Path\To\Trayconizer.exe C:\Windows\Notepad.exe