I have 3 dome tents;
One is a HUGE one (it's supposed to sleep something like 8 or 10, but it's the perfect size for 4 full inflatable mattresses with enough room in the middle for the gear and walking). That one I bought at Walmart a while back. It works great for hot weather, but I used it once in cold valley in Costa Rica, and we were FREEZING inside, as the cold air filtered in from the net on top (it got under the rain cover). I use this one when I go camping with the kids and wife.
The second one is a normal dome tent; this one is a Coleman, and it's for warm weather as well (although it is a bit more sheltered from the cold than the other one). This one I take in the Jeep when we are going on a more than one day trip. You can fit to full size mattresses, but it is cramped if you do so (I don't mind cramped when wheeling, as you don't spend much time in the tent anyway). I THINK it's
this one, but not 100% sure on that one (color look about the same, though).
The third one is kind of my emergency tent, which I take on wheeling trips that are not supposed to last more than one day. This one I bought at Wally World for about $8, and I don't really fit stretched out, and a full size mattress will not fit in it either, but, as I said, this is just to get me off the jeep's seat in case of emergency, and it takes VERY little space.
I also have a camping stove (gas), which works pretty well (bought it in Miami; it is a OEM type, and uses one of those gas cans that look kind of like spray paint cans), and a Coleman Cooking kit (one pan, two plates, two coffee mugs, and one pot). They are stainless steel, IIRC, and all fit one inside the other, so they take up very little space, so I highly recommend this kit (I looked online, but it seems they don't sell them anymore).
I usually hang a Trasharoo on the back of the Jeep for the trash; this product I am very happy with, as it takes all the nasty stuff and keeps it securely but outside of the Jeep. I also recommend this one (although a friend made one using mine as a guide and saved about $30; so if you sew, you can make your own).
If the trip is light, and we have the room, a friend of mine gave me a picnic kit, which is a box with plates, glasses and silverware, and enough room for all the food you rather not eat crushed (bread and such), but, to be honest, I have yet to use it (and I would not take it wheeling, as I would probably end up ruining it!).
Of course, the mandatory 4 inflatable air mattresses, two coolers (and Igloo one, and a fabric one I bought in a Miami Boat Show which is PERFECT for the Jeep!), two canvas folding chairs, 2 collapsible water carriers, 4 Wally World sleeping bags (one is a lightning McQueen one, one is a Cinderella one, and two are plain green), and a couple of tarps and some ropes which we typically use to make shelters by hanging them from trees (ropes are also used as clothes hangers to dry wet clothing; simply twist two strands together as tightly as possible, and stick the clothes between, and you don't need any clothes pins!).
As for where I have camped, it has always been in the hills around Panama and Costa Rica, with the exception of a couple of beaches thrown in for good measure (but ussually, I try to avoid beaches, as the sand is a real PITA, and, unless you have fresh water around - like a river or such - you end up all sticky from the salt).