For inspiration: Painted cross-stitch on walls. You could project a regular cross stitch pattern on the wall, use colored pencils lightly to mark the colors in the design, and then just paint over them using acryic paint. Just gorgeous!
Honeycomb Wall Treatment: Ready for an incredible weekend project? This honeycomb wall takes some commitment, but the end result is jaw-dropping. Just think of all the color options you could try. (via Vintage Revivals)