Needed something to hang things like keys, dog treats, and flashlights on. Thus designed a replacement for our 4-gang lightswitch cover. Note there are two parts: the main plate, and then a rim that clicks into the main plate.

After a few iterations got a functional print that works for us. It's still highly imperfect and if I have to time will revise to make it better. Printed in two parts to avoid needing support structures and elevate rim from wall (ideally there would be more support around screws - built from the rim). Made the hangers bulky to reduce probability of breaking (no breakages yet after over a year!).