Here are a selection of vintage themed ATC's (ARTIST TRADING CARDS) I made today. It is one of my favourite themes and colours.
I swap monthly with some people in the UK and bi-monthly with people abroad.
They are small enough to collect 3 1/2 inches by 2 1/2 inches without needing much space for storage.
They are great to use up bits and pieces in your craft stash, and its a different challenge to things on this small scale.