BeanBox keychain/necklace

I wanted a __sturdy__ keyring than could hold securely small things, electronical components, screws, nuts,screwer bits, liitle tools, etc. (Don't put inside candies or pills unless you print it in P.E.T. plastic!!) I don't ever know what kind of stuff I will need, so I thought about it and this is the result. A cute ellipsoidal ('Beaned') keychain hard to open (pressure is configurable as you tighten the spring). You just need a M3x30 screw, a small spring, a M3 nyloc nut (recommended) and some