I think we could sell ebooks themselves, in addition to the devices, by selling coupons with a discount or automatically directing wireless internet connections through a webstore first before going out to the rest of the internet. And there are at least three competing devices now. I know Amazon sells theirs directly, but they also have an affiliate program, and they're pushing the Kindle through that program. I think it would be possible to build a model that would work with Kindle resales for a small margin.
Anyway, the primary income for the store would probably be the beverages and food. (My husband makes very addictive scones. We've just started selling them through a local vendor.)
I'm probably about 4 years away from completing my doctorate (including defending my dissertation). Figure another year to get a job, another two or so to get tenure.

(If I'm lucky, I might be able to get a tenure-track position before I defend.)
Settlers of Catan is good.
Player of Games is one of my own personal favorites.