5. Still a kid party
Even the most mature of adults sometimes want to be kids again. Why not to throw still a kid party to give your guests some fuzzy and warm nostalgia? Tell your friends that they should buy a toy, which they know their past kid self would have liked. When your friends get to the party, throw all toys into a grab bag from which everyone will blindly choose a present. For even more laughs you can also play this as a “white elephant” present exchange. The drinks and food should be that which children would like: fruit punch, hot cocoa, cookies, macaroni with cheese, etc.