Mark - there have been several threads on this topic over the years (I know some have trouble with the search so I'll link a few here).
Camping tips:
https://cessna150152.com/forum/ubbthreads.php/ubb/showflat/Number/259120Confab Camping:
https://cessna150152.com/forum/ubbthreads.php/ubb/showflat/Number/386797Packing List Camping:
https://cessna150152.com/forum/ubbthreads.php/ubb/showflat/Number/553489I know there are other threads about what kind of tent, etc, but I can't seem to find them at the moment.
I camped under the wing for one night in 2019. I brought enough changes of clothes for the week, basic personal hygiene items, of course the tent, a sleeping bag & pad to lay it on, and a pillow. Tie downs & hammer. I don't think I brought my guitar that year.
Anything else I needed I bought at Walmart when I rode into town in the shuttle van, and only what I'd use while I was there, didn't bring anything back with me that wasn't in the plane on the way up, except maybe a small door prize or two.
Last year I had to drive up because my plane was in the paint shop, so I camped in the bed of my truck all week. It worked out great. I still packed minimally, but had a little more flexibility in what I brought.