Have you ever heard of Artist Trading Cards (also called ATC's)? They are small works of art that anyone can make and trade. I just started making some in March, when I joined the monthly ATC swap on Craftster (http://www.craftster.org/ --if you haven't been there yet, GO!). Each card is 2 1/2" by 3 1/2" (the same size as a standard playing card). You can decorate it any way you want--they are usually collage, drawing, or painting; in the gallery of ATC's from the March swap, one imaginative crafter even made a card from SOAP, and another person made one from GLASS!! To see all these cards, go to http://www.craftster.org/forum/index.php?topic=373868.0 . To see my cards, just scroll down!
All of these are drawn with a Sharpie and colored pencils. I have always enjoyed art, and it was fun to get back into it with this ATC swap. Sorry about this last one being sideways--I will try to fix it, but didn't want to leave it out because Susan would be so disappointed!! (I traded this card to her, and she loves it!).