Magentic key holders
thingiverse
The strap printed on a Prusa Mk2s using Flexi PLA, small round Neodymium magnet 10d x 4h, just stick you keys on the fridge so you'll always know where they are. Use 80+ infill, this FlexiPLA really sticks to the build plate. Two versions the second one you can made with normal PLA (print with build plate supports only) this you just attach to the split ring on your keys
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