You can have your caffeine all the time - well, around your neck anyway. A necklace using the caffeine molecule is definitely a talking point, especially for the scientifically-minded.
The caffeine molecule is rendered in a ball and stick way.
Attach a neck chain to two sticks where balls poke out.
WARNING: very difficult to successfully print on plastic extrusion machines (FFF/FDM). Maybe increase size by 50% or more to thicken up the sticks, and print thick walls and fine resolution. All the hydrogen atoms out of the plane of main molecule either did not print properly or broke off with the support with the settings shown in the Cura screenshot.
If anyone does a powder print or resin bath print (or, indeed, any successful print), please post a comment.