Need my comfort too much to rough it in anything except the best of summer nights so camper is definitely the way.
Have built or worked on a few over the years and now have a lager van converted (and a few to build for mates)
For me essentials are double bed (2 things worth spending money on- boots and beds- if you're not in one you're in tother), shower, toilet and heating. Cooking facilties are easy enough outside.
The current camper has had loads of use for the family through last winter up until the end if this summer. 1st night in it was coldest night last year and I had to get up to turn the heating down. Luxury. Not exactly what the OP was asking but it certainly covers any stalking I will do and great for the family. Mine has a TV that's never been switched on ,shower, toilet, 2 double beds, light, heating, cooking, fridge, enough room to dress properly...could spend weeks in it.
Just about to build a smallish, part time kind of utility camper, hybrid, everyday, school run, stalking, dog bus, kid carrying, bike transporting, fishing gear storing thing....
A transit custom with 2nd row of removable seats, diesel night heater, hinged bulkhead, insulated, raised floor, folding bed, bigger wheels and AT tyres....
Not something I'd want to spend much time in as I like to shower and **** when I want. I also like to be able to stand in comfort to cook or dress etc but for a couple of nights out it sure beats being cold, wet and uncomfortable.
Don't come cheap though.
Edd