I have a good secret, so I'll tell it. Like all Internet secrets that websites go on about for days at a time, though, it will cost you.
Since I had to replace some outlets anyway, these new ones with USB plug-ins are awesome! They're only a few dollars more than the regular ones and easier to install, because you just stick the wires in instead of wrapping them - the internal wiring is all set up for your normal two wires on 15 amp. So it's an upgrade and something potential new buyers would ooh and ahh about. The least expensive quality one I could find was at BestBuy. It's mostly plastic, but well made and you get the entire unit all together
https://www.bestbuy.com/site/dynex-2-4a-usb-wall-outlet-2-pack-white/5834701.p?skuId=5834701: