Just a bit of grinding and WM's steel corner brackets make dandy motor brackets for Stingray-style gearmotors. Stronger and cheaper than RS's simple aluminum ones: https://www.robotshop.com/en/dc-geared-motor-bracket-spg30-spg50.html
"When you make a thing, a thing that is new, it is so complicated making it that it is bound to be ugly. But those that make it after you, they don’t have to worry about making it. And they can make it pretty, and so everybody can like it when others make it after you."
- Pablo Picasso