Let the true geek in you shine through with this keychain shaped in the form of one of the worlds most popular stimulants, caffeine. Offered through the online retailer, Fractalspin, the Caffeine Keychain gives you an unusual design that you can use to carry around your keys.

If your trying to get off the caffeine habit, Fractalspin also offers keychains in a variety of other molecules, including the ever popular Testosterone, as well as the more passive Serotonin.

I remember my days in chem class when we had to learn a variety of molecular structures for various compounds. Some of my classmates certainly got a kick out of it and went into chemistry as their profession. If you know someone in such a field, they to just might enjoy these unique molecular keychains.

Product Page: Molecular Keychains via coolest-gadgets