In Denmark (maybe also in other countries, I don't know) we have something called Go-Cards. It's free postcards everybody can take in many coffee shops, bars and restaurants. Many years ago Go-Card asked me if I wanted to make two movables for them, just for fun. I made them so it was possible to assemble the card and make it work without cutting and glue. The size was like a double postcard before assembling and a normal postcard size after assembling.
To pop-up kort jeg konstruerede til Go-Card for en del år siden. De er konstrueret så man ikke skulle bruge saks eller lim til at få dem til at fungere. Man skulle bare trykke alle delene ud, samle kortet efter anvisningen og så var kortet klar til at bevæge sig.
Inden samling var kortet dobbelt postkort størrelse, efter samling almindelig postkort størrelse.