I'm looking forward to hearing what everyone else does. I know some people use their prize cards as cage labels or shopping lists, but I still have every prize card I've won. I keep them in a box, and the Certificates of Merit in a tin:
L1270919 by
Vectis Hamstery, on Flickr
The first trophy I won at a hamster show also lives in the box:
L1270926 by
Vectis Hamstery, on Flickr
My Champion and Grand Champion rosettes live in the hallway:
L1270917 by
Vectis Hamstery, on Flickr
I must confess that I keep the nice rosettes, the special ones and one from each 'event'. I give the others back to the clubs for recycling after taking photos of the hams with them. I still have my first pet class rosette and my first rosettes for novice and breeder
L1270930 by
Vectis Hamstery, on Flickr