This prank is one to build up to April Fools Day. Every time you are near someone leave pennies / small coins without them noticing.

This one can really scare the crap out of someone! All you need is a pair of scissors and some paper. You'll need some skills as it isn't easy to cut out some insects!

Use a mannequin head and place it next to your partner while they sleep. Wake them up and as they try to look at you they freak out as they see the fake head.