Power supply for Arduino Mini Pro

I've just ordered an Arduino Mini Pro to replace the Arduino Uno in one of my projects so it would require less space. I've also ordered the USB to Serial to be able to power the Mini Pro and upload the code. However, eventually I would like to get rid of the USB to Serial and connect some sort of power supply that I can just put into a power socket to let it run. So far I haven't been able to figure out what would be the best way to do this. Any suggestions?

Th mini has a regulator on-board, albeit a small one. Do you have the 5V or the 3.3V version? Are you wanting mains power or battery power?

Connect a 5V phone charger to the 5V pin.

Yes, any kind of 5V wallwart to the VCC pin (not RAW).
I use these all the time:
with a panel mount power jack if using an enclosure:

Great, I was hoping for something like that. I've got the 5V version so I guess a normal 5V charger/power supply will do the job. Thanks a lot!