So many kids toys use custom brick chargers, especially remote control cars. I refuse to buy anything that isn't USB-C, I'm not keeping track of all of those.

Any recommendation for electric shavers that are USB-c ?

I don't like USB-C because they all look the same on the outside, but they're not all the same on the inside. Especially my cheap consumer electronics. Sometimes they will charge, sometimes they won't charge, but all the cables look the same, and you don't tend to know in advance.