A 12V DC electric air pump that runs off a vehicle accessory socket, with nozzle adapters for common valves.

Vehicle camping means you already have 12V at the campsite. This is the cheapest way to turn it into a full air mattress without a foot pump and a bad mood.

Inflates and deflates. Comes with adapters for mattresses, boats and pool toys.

Runs the engine or the house battery — it draws little enough that a few minutes will not strand you, but do not leave it running on a starting battery all evening.