You can buy crimp ferrules at any hardware store that sells steel cable. They go on the end and get crimped in to place to be used as an in-line stop. I've made lots of hood release cables and I've used them for years to make snares. I know that appears to be exactly how ebrake cables are constructed, but I'm not sure where you could get the sheathing. You could probably find a cable that's too long, cut it to length, and crimp a new ferrule on the end.
I use the hydraulic crimper from Harbor Freight. It works really well for battery cables too.