Here are some fantastic things to throw,pop,stamp on,spray or run over.
Lemonade - Shake it up till the top of the bottle is rock solid,then throw it bottle down at the ground.If done correctly,it will fire off like a rocket and possibly smash into stuff.
Spray Cream - Go around writing things in cream!Just like graffitti,except you won't get arressted for doing this!
Yogurt - The old classic.Go into a public toilet,into a cubicle and spray cream all round the toilet seat.Then stand back,and throw the yogurt at it.It should splatter all over the whole cubicle!Me and a mate did this and he pissed himself - litterally! Luckily we were in a toilet though....
Sardines - Not all that great actually.After my sardine experiment I stank like a small fishing boat.
Milk - I drank loads of milk once,before realising it was pasturised.I chucked it up all over the place - top stuff.
Sausages - Slapping people with sausages is immensely satisfying.