Philips Hue Tap Dial Switch

A proper wall switch you can stick anywhere. The Tap Dial's plate fixes with its adhesive backing, beside the bed or the front door, and the dial lifts off the plate to use as a remote or to sit on any magnetic surface. Four buttons hold scenes or rooms, and turning the dial dims, so one switch can run a whole small flat. It needs a Hue Bridge and costs $49.99 or £44.99, which makes sense only if you already own or plan to buy Hue lights. The coin cell is rated for at least two years.