MCU's have got motor drivers for...
- The idle adjust stepper and they could be used for H-bridges (but get two of the same MCU, as there might be just 2 of the same kind in a box (the idle stepper is a 6V device, so only uses a half bridge).
- And the injectors are pretty low impedance and must react fast, so their drivers can pull a fair amount of current.
In the ones I have opened, all chips and transistors have been clearly marked - invaluable when looking for datasheets.
Window motors should be good for various stuff too and are fairly easy to get to.