The machine is called an Art-o-mat and in it are the mini works of 30 or so emerging artists.
Marlene and I pondered all the possible art choices and settled on supporting a pinhole photographer Emily Long. For $5 I now have one of her original pinhole images abandoned shed, southern cook county, il carefully adhered to a block of wood the exact size of a box of cigarettes.
DiverseWorks in Houston, TX has one of these machines but I never made a purchase when I was there. Now when I see these machines I'm going to make a purchase.