The previous owners of our loft had this great art on the wall next to the staircase:
I thought it would be easy to find something similar, but we never found anything that we loved at a good (cheap) price so we decided to try a DIY.
We were feeling inspired by some great Kandinsky-like circle grids at Stay-at-Home Artist, and some price-savvy framed craft papers at Young House Love. Enter 20 unfinished Malma mirrors from IKEA, Frog tape, Command Strips and some craft paint.
It took a lot longer than I thought with all the paint mixing, but I think it was worth it.
After taking this picture, I notice where I need to straighten and switch some mirrors, but the Command Strips make that easy. It makes such a difference in the room, and I love the way the light hits the mirrors at different times of the day.