My most used one is to map Right Ctrl+V to paste by actually typing what's on the clipboard instead of pasting allowing pasting in places where you may not have it - e.g. login boxes on certain KVM controllers.

>^v:: SetKeyDelay, 10, 10 SendRaw %clipboard% Return ; this version types it with a larger delay to account for latency >^+v:: SetKeyDelay 500, 10 SendRaw %clipboard% Return