Welcome to the Achaea Forums! Please be sure to read the Forum Rules
I've been thinking about this idea quite a lot, though I'm not sure what to call it other than 'tattooing".
The idea is to put a player-created tattoo into the current NDS set-up. The tattoo artist would submit a tattoo flash to the crafter's guild, get it approved and then be able to artistically tattoo that design upon another player, which would then show up in the player's wearable line.
Currently tattoos are played via descriptions, though some Divine (Hermes Ace of Spades tattoos for his order, the same with Artemis) and Zanzibaar's henna tattoos have the wearable tattoos that I'm basing this idea off of.