I have a homemade tiny camper for rent. It is NOT a T@G. They made me put a make and model so that's what I put.
This camper gets lots of looks at the campground! It is made with cedar boards. It has 110 power with an air conditioner and also 12 volt with a 110 amp/hour AGM battery. The air conditioner will cool the camper down in about 10 minutes and you can keep it in the 50's in there if you want even in the heat of the summer. We have stayed off grid in it for 3 nights and had plenty of battery for the fan, lights, charging phones/ipad, etc. I am still working on the camper so it does not have a finished interior (yet). But it does have a full queen size mattress and 4 inch memory foam topper. It is comfy! It's a great little camper for the campground or out in nature by yourself. It is lockable and the back hatch fits quite a bit of gear. I also have a truck that could be rented if need be. Kayaks are available too. I can even set up at a local campsite if that works better for you. It sleeps two adults with extra room. We take our greyhound and her big fluffy bed fits in with us. Also has a truck toolbox on the front for even more storage gear.
There is NOT a toilet, kitchen, or shower. It is simply a place to rest your head after a day out hiking, boating, kayaking, etc.