The American Levitation festival has become THE place to see new psychedelic poster art with the organisation commissioning the current crop of 21st Century poster artists channelling the late 60s San Francisco era in new ways. Posters usually come in colour or foil variants, all for an affordable $30-40 compared to the thousands the 60s originals can go for. The two Brian Jonestown Massacre posters above by Weird Beard 72 work individually or join to form a larger image (both ways) and several artists have used this device, sometimes to form a triptych. Buy the posters from here, they also have a nice line in live recordings from their archives too.