A Nook kiosk, fully stocked with accessories, and magazines and mass market paperbacks and the latest bestsellers--not unlike an airport bookstore. Also, they can set up a touchscreen kiosk where people can order books the store doesn't carry, with the ability to either come back to pick them up (for free) or have them delivered to their home (for a fee). That would work nicely in a mall setting, with the smaller stores.
In the B&Ns near me* the free wifi is very popular--the cafe is always full of kids with laptops. I don't know if they buy anything, though. Maybe drinks.
*I patronize three different ones--one is near me, one is near where I often shop, and my book group meets at the third.
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