Old ATX PSUs can easily be made into really great, regulated, high-current power supplies. It’s an old idea.

Banana posts for output (3.3V, 5V, 12V) with a 5A fuse on the AC side plus a neon indicator whenever AC is connected. An pushbutton with LED illumination (driven from 3.3V rail with some current limiting) starts the PSU and provides visual feedback that DC is on and OK. Can’t go wrong with a project that cost 5 bucks.