I could see a market for a small electric camper van (Like actual small van sized like the old VW vans) with a solar roof. For regular camping you would always have electric to charge your phone and if you wanted to tour around a bit you could probably stay at each location for 2/3 days and gain enough charge to make it to the next one (at least in summer)
IKR? Especially if they all start the room you can leave and the other room is small enough to be a crush when everyones in it. At first a few people go through the door out of curiosity but realize its one-way, some people panic some don’t, some go in there too but it starts getting crowded. But now you have a minority outside the crush room who are being told not to come in and getting increasingly isolated. One by one everyone enters the crush room making everything worse for themselves and everyone else.