Non-damaging desk hook

Since at work I'm not allowed to drill right into my desk, I had to improvise. The screws in the picture are not into the wood, they simply sit in the existing holes for shelves. Printed with a decent amount of infill and oriented the right way (filament is stronger in tension), these hooks easily hold about 25 pounds (my backpack with lunch and books). I've included the Sketchup file so you can see the hole depth and spacing and adjust as necessary.

Updated to be slightly wider and have nicer/more curves.