Help with some little pranks =)

[bbbaseball2]

Does anybody have a good idea what to do when i access my sisters computer through the command line i.e. telnet. I am looking for a good prank that would give me a good laugh and scare her but not hard her computer too badly. Thanks

 

[AdmnPower]

we don't promote such things here

 

[ducis]

move all her desktop icons into a folder she never uses and use CCleaner to delete her cache both are harmless but will scare her