ThinkGeek :: Laboratory Beaker Mug
http://www.thinkgeek.com/homeoffice/mugs/96c6
"Step up to the big leagues, and drink deeply from your very own 400ml laboratory beaker!"
ThinkGeek :: Caffeine Molecule Stainless Travel Mug
http://www.thinkgeek.com/cubegoodies/mugs/3820
"These sophisticated stainless steel, travel style, mugs have our famous Caffeine molecule printed in black on the front."