Over on the Etsy site I discovered "ACEOs" (Art Cards, Editions and Originals). They are meant to be fun and affordable tiny pieces of art that are all 2.5" by 3.5"in size as standard. People collect them and keep them in albums sometimes, like old cigarette trading cards. They are designed for framing individually or hanging in groups, or they can be traded with other collectors. Anyway, I had a go at painting my own.