I just adopted my 13 year old sister after a year of her living in a group home, what prank can I pull on her today that isn’t too evil??

She’s been going through a hell of a lot lately, and I want to do something funny to cheer her up but also prank her good. I’m not good at these types of things and I was gonna like hide in the house and pop out and scare her but god forbid she walks around nude or something thinking I’m not there.. so I don’t really have any ideas..I also have a 5yo son so if it could be a double whammy that’s even better. via /r/Parenting https://ift.tt/343Aa52