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 glue. Insert the nyloc nut in the top part, Insert the M3 screw into the spring and screw it into the nut from the bottom part. Depending of the spring size you may have to use a shorter M3 screw or cut it down. Do your proof till you feel the thingie can be opened/closed comfortably, then use some glue to fix the parts supplied to hide the holes and you are done!! The bottom hole filling part should be trimmed according to your setup. Easy and proffesional. Don't let your friends see it or you