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Here's a great idea for growing apples in your house or patio. One Green World has three kinds of apples that you can grow in a container and they bear apples along the main trunk. The description doesn't say if they are hybrids. I wonder if you could grow more from seeds, or at least cuttings. Nowadays they say all fruits are hybrids.
One Green World has a lot of interesting plants, like Goji berry (they call it Wolfberry), Guavas, Pomogrante, lots of kinds of Sea Berries, plus many other exotic fuits and berries.
Ask them to send you a catalog. The catalog is more descriptive than the website. For instance, there are three kinds of Columnar apples, Golden Sentinel M-26, Northpole M-7 and Scarlet Sentinel M-7, but on the website they are just thrown in with the apple varieties.