From time to time we've found it awkward when going back to the van in the dark because the closest light switch isn't by the door. I found This Light on eBay earlier this week. It can be mounted using built in magnetic base, supplied sticky pad or a couple of screws, or simply be left on a worktop. Comes on automatically when it detects movement and stays on for whatever time you have set. I ordered it at 8pm Tuesday evening and it arrived yesterday so quick enough delivery.