Scarlett,
Only the orange I mentioned before. Strictly ornamental and not good to eat. There are some like persimmons, plums and of course the grape I mentioned that are quite tasty.

Fengzi,
You know more than I do on that one. Just a caution that any potted plant, bonsai included, placed in a southern exposure window could be susceptible to too much radiant heat absorption. Bay windows and sunrooms are awesome places to jeep "indoor" bonsai.