Mac Min I USB C Hub

If that is the way you want to go, then you should choose a self-powered hub.

Personally I have to agree with woodmeister50 and prefer to use wall powered chargers for our iPhones, iPads and other devices.

Powered hub.

I believe that USB 2 and USB 3 allow for 2.5 watts (500 mA, 5 V) and 4.5 watts (900 mA, 5 V), respectively. I do not know if the Mac mini is willing to offer power via USB-C Power Delivery (and if so, how much).

If you're talking about charging multiple USB-A devices at once, it might be easy to attach enough that unpowered hubs would not have enough power to go around.

There are plenty of USB-C charging stations that plug into the wall or portable charging banks that can be used to charge devices rather than put the strain on the MacMini's power supply.

I just purchased a StarTech 5-port USB-C hub for my M2 Mac mini Pro. This is a bus-powered hub with charging capability through its ports, but the fifth port can also take power from up to a 100 W source and distribute 85 W to each of the other four ports. That linked vendor was considerably less expensive with faster ship and delivery times than ordering directly from StarTech or other suppliers.