I have discovered ATCs (Artist Trading Cards) and I have been having fun creating some to swap on one of the forums that I am a member of. I thought it would be hard to create anything with such a small area to work on, but it turned out to be really interesting. I have so many bits and pieces in my craft room that are really too small for normal card making but work perfectly on an ATC, here's a few examples:
I used papers from my CDs Funky Seasons and The Funky One
This looks like something I will be getting addicted to!