Years ago I added USB to the HP power supply with an E Bay aftermarket 12V to USB convertor - something like this one - https://www.ebay.com/itm/23434376255...0AAOSwg7tfBr6B - I think the one I got was smaller, and it fit inside the PS. There are lots of cool options on Amazon as well.

Lately I prefer to us a power distribution board like this one - https://www.rcjuice.com/skyrc-power-...ion-board.html - I actually got a ProTek one, but I can't find it on AMain anymore.