In-wall toothbrush chargers
What we have here is an in-wall toothbrush charger for your Philips Sonicare or indeed any other recent Philips toothbrush:

This is a drop-in replacement for the ordinary shaver socket that your bathroom possibly has (don’t forget to safely isolate before you get knee deep in electrics).
It’s an indulgence, sure, but there is something very satisfying about eliminating yet another charger and set of trailing cables, and the brushed steel faceplate looks the business. As you may be able to see in the photo, this model also has a 240V shaver socket on it too for any non-toothbrush devices. No 115V, but when was the last time you saw anything requiring that in the UK? Exactly.
This does of course mean that I’ve committed to using a Philips toothbrush forever after, but mine has been great for over a year now and the battery life is excellent, so why not?