I folded some paper, too. For an easy wall art project, try folding squares of colored paper and arranging them in a grid. I used part of a pack of multi-colored origami paper for this, but you could use any colored papers that match your room or your shop. It's cheap, simple, and the 3D sculptural look is fun.
I would love it if someone would cover an entire wall with white squares. The light and shadows would be beautiful. Though that wall would be easily smooshed when a person leaned against it, alas.
To make the paper ball in the photo, click here.