I printed a cover and stuck the cheapo bike lights in from Lidl or Aldi.
There’s a hole for the button and little retainer for the rubber loop on the lights.
They’re about £1.50 a set.
@Pedrodemio that was exactly my idea. I was going to buy a light, strip the inners, wire it up to the main battery unit (after it’s been through a step down converter), have a case 3d printed and away we go. I don’t have access to a 3d printer though!
@bigben that’s smart! Perfect temporary solution as I’ve already got some of them lights. Hook a guy up with a couple of them 3d prints?