Calling all troublemakers

Ok so im new at my school and I have a ton of friends and two best friends. I luv my school but I think its getting kind of boring! what are some funny things to do and and out of class to make it not so boring and a little bit more fun. For example the pen*s game is fun but can get old easily and spreadig rumors is just stupid. Ps. Im not asking for things like put glue on your teachers chair!!!
Calling all touble makers!!!
Give me ideas!

haha yeah. putting ketchup like in between the toilet seats y'know? that's always fun.