Caffeine gives you energy.
The definition of "spree" is: "a sustained period of unrestrained activity."
So we'd like the logo to convey coffee, and energy, or the ability to get things done.
One example idea (and this is only an example, don't feel required to do this!) would be:
Showing very wide-open eyes to indicate being wide awake. There are lots of possibilities here. A very detailed close up of an eye with the lid wide open. Perhaps with something coffee-related pulling open the lid. (I've attached an example photo, but obviously we don't want a monster! We want something humorous, friendly or reassuring.)
Another example might be two coffee mugs arranged so when viewed from the top, they look like to wide-open eyes.
Continuing with the eye-related ideas I had, a third example could be wide awake cartoon eyes where you work in something that represents coffee into the graphic.
I'm not an artist myself, so perhaps this is not a good or practical idea, it is just one example of a possible logo.
Also, feel free to be outrageous. If the logo ends up being a little shocking so that it can be noticeable, that's fine. It needs to look different from most logos.
Please feel free to ask if you've got any questions!
Thanks for your submissions.