I've just picked up 2 as well. I love it... every time I play this game there's something new that brings a smile to my face.
Although I have a sneaking suspicion it's going to be like those grocery-store/fast-food promo things where they print thousands of the letters W, I, N, N and E but only print 1 "R" :-)
These are far too common. I have 15 of SWFs and several games hogging up a bunch of my inventory space. I'd like to be able to turn them off or at least have something useful we can do with them after the first game.