Anyone know of any harmless but good pranks to pull while camping?

Theres tons!
lock ppl in tents, peg tents, duct tape ppl, all ur gewy stuff like toothpast honey shaving cream ext.
steal all the food from the cook tent(mess hall, kitchen)
selophane rap everything u can get ur hands on, cars are the best.
throw a can of beans in a fire ( make sure ppl arnt crowded round it) and in between 2 mins and half an hour boom beans everywhere.
l really could go on but l think thats enough for justy now

Sew peoples spare pants tight at the waist so they can not get into them. Sew their spare T-Shirts closed at the neck so they can not get them on. Put grease in the little zipper on their tent door so their fingers keep slipping off it. Stuff tissue in the toes of their shoes so they seem too small when they try to put them on. The can of beans in the fire is hardly harmless , l would recommend u avoid that as it could spread ur campfire into the forest as well as giving some friends unneccessary trips to emergency.