I could get through the day without caffeine, I just prefer not to. 😉
My friend Anna sent me this Caffeine molecule mug. (Thank you! ❤ )
It was from Thinkgeek. It is not available now, but you can show your love for caffeine with one of these mugs from Etsy.
Here is one from a shop called AnomalyGifts
Or this one from FoxyMug