In the last month ATC swap on Cster I made a Craftster themed masterboard and made all my partners ATCs cut from the same masterboard. It was kind of like we all got a piece of something to tie us together (mushy, I know - not my normal MO )
Here is the complete masterboard. The masterboard has spackling (used instead of modeling paste as its so much cheaper), dry wall tape, stenciling, notebook hole protectors, acrylic paints, gel pen and probably stuff I am forgetting.
and cut into ATC size
Leftover scraps I used as embellishments
All the ATCs
And close ups