Parking a campervan on a sloping site at a holiday park or a gravel roadside stop can leave the whole vehicle creeping. Campervan chocks wedge against the tyres and hold the van in place, which matters for safety and for a decent night's sleep. A level, settled van also makes cooking, opening doors and stepping in and out easier after a long drive.
Size is the first thing to get right, since a chock that is too small for the tyre can slip out under load. Plastic chocks moulded from polyethylene are light enough to stash in a locker, won't rust in salty coastal air and are easy to spot in bright colours. Use them in pairs on the downhill side, set them before releasing the brake and remember to collect them before driving off. Keeping campervan chocks in the same spot every trip makes setting up and packing down quick at every stop.