Some postcards are based on so called "Quetschflecken". A Quetschfleck is basically a blob of paint squeezed between two papers and creating a random shape. The occurring shape forms the base of a little artwork.
Post- and greetingcards
Post- and greeting cards are always a nice item to receive, collect, send, fill the fridge or create an inspirational wall. I like to create individual (birthday) cards that personally relate to the receiver.