thanks to Linus Techtips for telling me that it's actually perfectly doable to run all my old consoles off of USB-C bricks and damn him for making all the stuff be out of stock
I already have a PSX PicoPSU so I'll look into getting at least one of those barrel jack cables, also I'd love a N64 drop-in replacement, the way the PSU attaches just lends itself to that kind of fuckery