12 Psychedelic Squares Patterns
These, free, retro, trippy square patterns are vaguely reminiscent of 60s and 70s tie dye patterns. I've designed them to work at web and print resolutions, and are, of course, seamless and fully tileable.
If you're looking for similar retro wallpaper or background patterns, you might want to grab my Tie-dye Style Patterns and Psychedelic Circles as well. Just click on my profile name.