Hidden Thumbtack Hook
thingiverse
A simple hook remixed from jssammon's design, modified to fit flat head thumbtacks for use on a bulletin or cork board. Perfect for a dorm room that's cramped, or a cubicle where you need to hang something up. Just slide a tack in (it won't move all the way along the slot) and push it into the wall and have a perfect place to hang keys, a lanyard, anything you could think of.
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