Magnetic lock
thingiverse
This is a mechanical lock that you can open by laying the key on the orange part in front. To close it turn the key around and remove it. If closed it is actually quite secure I have not been able to open it by shaking it or using big magnets. Use 8 5*2 neodymium magnets and use superglue to attach the two body parts and to hold the magnets in place if needed. If you want to get the same effect as me use the multi color mode in your slicer and switch the filaments mid print. This lock can be opened super quickly when you put the key on. This lock is not easily bypassed or broken the easiest way of opening it is by cutting the shackle with a dremel or similar. if this is a concern print the big shackle file instead this one is thick enough to not be breakable with this attack
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