2 or 3 light weight tarps for use as ground covers, wind breaks, tents. The plastic cheapies available now-a-days can make or break a camping trip. Back when the ONLY tarps were heavy duck canvas, we'd take a small one for a sleeping bag ground cover and a bigger one for use as a tent. Google "boy scout tarp shelter" for examples. Those things were heavy enough dry. Get'em wet and they weighed a ton and took forever to dry out.
2 or 3 rolls of 1/4" nylon rope - you can never have too much rope. These can be used to string up the tarps as windbreaks or shelters, act as clothes lines for drying clothes, other tarps, etc. To go with this, throw in a bag of 100 clothes pins from Dollar General.
3 small, plastic nesting dish pans for dish washing - 1 for wash, 1 for rinse, 1 for disinfect/2ndary rinse. Since the pans nest, 3 take up about as much room as 1, and you can use the pans to contain/carry a bunch of smaller item.
Cast iron wise, I'd say -
- a #8 or #9 Camp Dutch oven (the camp ovens are the ones with 3 legs) with RIDGED lid. A camp oven can be hung over a fire OR set directly onto a bed of coals, where the standard Dutch oven just has a flat bottom - not as stable on a bed of coals. I prefer the ridged lid as it is designed to hold coals on the lid for baking - biscuits, corn bread, etc.
- #8 or #9 skillet with lid. The skillet can double as a griddle for grilling bacon or burning flapjacks, ... A lid allows you to slow simmer stuff AND keep ash from flying into your meal.
If you pick the same (#8 or #9) oven/skillet, the oven lid will USUALLY fit the skillet well enough that you only NEED a single lid. Lessens the weight, unless you plan to use both skillet and oven simultaneously.
Unless you have a ton of folks along with you, or you have a larger family, you don't really NEED a #10, #12 or #14 dutch oven or skillet. Just adds weight and takes up more room. And since you are single, and just have the capacity of a Jeep, volume counts. If you decide to add a trailer behind you, well, make sure it has good ground clearance.
Ask me about the friend who decided to drag a trailer with a 9" axle height into the Lincoln National Forest. Damn, I wish I still had the pictures of THAT escapade.
Depending on how much camping you intend to do, you may want to build yourself a "chuck box" where you store all camping utensils, dish pans, soaps, skillets, etc. Load the box and go. You just need to make sure and replace all expendables after each trip AND remember to put the durable goods back in the box after to perform a "real good cleaning" after you wash and dry them after the trip.
More stuff as I think of it....
and it isn't blocked, and my boss is a baby knife head too, I should be back around these parts. 
