Mine's massive, and it's NOT made of plastic (Anyone else watch the Office? The original UK series, not the contrived American adaptation)

Well, it's a bit hard to answer because everything I touch is a Transformer. I can transform a piece of paper into an origami frog. I can transform a Margherita Pizza, a tin of pineapple, and some bacon into a Hawaiian Pizza. I can even transform 3+4 into... 7! Amazing!

Serious answer though; I stopped counting my collection after it hit 389 several months ago. It's a bit bigger now I think.