This was an assignment for one of my second year industrial design classes. We had to make a 3D printable product that interacts with our phones. I chose to create a set of polypore mushrooms that I could hang on my wall and use as shelves. This set of mushrooms will allow the user to set their phone, glasses, and keys on them all at once. Of course you could set what ever you want on them once you print them out :D

They are attached to the wall using 3M strips.