Try a Jade. If you get some decent sunlight through the window or supplement with a grow light it should be fine. Water it once a week and you'll be good to go. Not necessarily a "real" bonsai, but if you shape it via pinching it will be close enough for your purposes. If you can get enough light to it, the leaves will take on a really nice reddish tint on the edges. Sorry, no berries or flowers though.

Jeff Isom
Cleveland, OH / Sunset Zone 39

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