My grade is ending the year off with an entire prank week (It's a tradition so I don't really have a choice). Here's what we've done so far:
Monday - Planted a tree in the soccer field.
Tuesday - Put 100 portable alarm clocks in our lockers and set them all off at a designated time.
Wednesday - Let 3 chickens loose in the cafeteria spray painted "1,2, and 4" (The janitor killed them

) And a water balloon fight.
Tbh, that mess ain't cutting it, have any innovative idea that are clever and don't involve vandalism? I would prefer something funny and easy to do.
Do you guys have any ideas for Thursday/Friday?