Random Geometry Wallpaper by Nama Rococo
This fantastic wallpaper from Nama Rococo obviously has its roots in the 50's, but the hand-drawn lines and floating jellyfish shapes make it very contemporary too.
I don't think you would bore of the design easily, although the temptation to get your felt tips out & start colouring in, might be too strong to resist. Nama Rococo is based in America and hand-print their small collection of designs at their studio. Their collection is distinctly individual and at $126 a sheet you are probably not going to want to use if for the whole house - but a little bit here or there could be just stunning.
Find out more at Nama Rococo.