psychedelic checkerboard and mashroom background. wavy s, trendy psychedelic style and groovy color

retro pattern background psyhedelic checkerboard groovy funky wavy vector abstract y2k 70s playful design art graphic grid vintage illustration wallpaper 90s poster seamless chessboard print chess cute pink texture square naive paper cover backdrop grunge tile green style chequered contrast ornament artwork illusion hipie fun surreal set curvy collection 60s