Vertical bike rack

I wanted to store my bikes vertically in my apartment, but didn't want to scuff the wall and didn't want to rely on drywall anchors. So, I designed and built a wooden L frame that: 1) supports the bikes off the floorl; 2) clears the moulding at the base of the wall; and 3) looks somewhat decent. All for about $20 per rack. (The rack on the left isn't finished yet, but you get the idea.)