I probably have 50+ total, ranging from an ASA EMB-120 safety card, to a NW 747-400 safety card. Every time I get on a plane, I pick up a safety card, and add it to my collection. I'm still trying to get like, a folder for them, so I can have them better organized. Right now, mine are sitting on a bookshelf with my in-flight magazines, waiting for me to do something with them.
A310/319/320/321/333, ARJ, BN2, B722/73S/733/734/735/73G/738/739/744/757/753/767/763/764/777, CR1/2/7/9, DH6, 328, EM2/ERJ/E70/E75/E90, F28/100, J31, L10/12/15, DC9/D93/D94/D95/M80/M88/M90/D10, SF3, SST