I’ve read that a clean power supply is important when doing SCA.
Currently I use a PC power supply box that I have sitting on top of my desk, ie the PSU that usually goes inside a PC but it is sitting on my desk not actually mounted in a PC. This provides me with many connections to 12V, 5V and 3.3V which covers 99% of my needs. I don’t know how “clean” this power would be though and worry that it could be an issue.
Perhaps you could sell a “clean power” board that takes as input a molex or sata style plug or even usb as input, and provides a clean version of the power as output, ready to use for SCA.