Repairs, besides flats? None, really. Occasionally I need to tweak a derailer or brake. I try to stay ahead of basic maintenance so nothing breaks down.

I've had one spoke break, and another wheel warped when I slid sideways on loose gravel on asphalt left behind by a road crew. I was able to straighten the warped wheel well enough to limp to the LBS where they did a proper repair. But I don't usually care spare spokes, although I've considered it.