Carseat: You arent going to find a seat that is built for off roading, so unfortunately you are going to have to tone it down for a while. There are several "buckets" available. By "bucket" I mean a rear facing infant seat where you leave them strapped in and it attaches to the base. This allows you to move the baby around without waking them up (keep in mind that they need to sleep 18-20 hours per day when they are brand new). This can also attach to a stroller base. They are expensive, but its something that we didnt spring for with either kid that we wish we had, in retrospect.
Pack and play: Dont get one with bells and whistles. Get one or two basic ones, and keep it with you as part of your basic baby kit. In fact, if we had known then what we know now, we would never have bought a crib, just pack and plays. When camping, we use a sturdy comforter (that doubles for tummy time) and throw it over the whole pack and play so the baby can stay warm and still play in a safe, confined area (of course supplemented by a warm footy sleeper).
Rocker: For our second critter, we got a powered rocker. Wonderful for when they are tiny, because you can use an extra blanket to prop up the bottle, then turn the rocker on for a half hour interval after the baby finishes the bottle (my wife wasnt able to breast feed, not sure what your plans are). If you get clued into the noises that your baby makes, you can accomplish a "dream feed," where the baby never really wakes up.
Bouncer: When your critter is a little older (5 months or so), you can invest in a bouncer. They typically have little toys and stuff for the baby to chew on (keep in mind that from age 4 months to about 18 months, babies like to put EVERYTHING in their mouths). Hours of entertainment for the baby and you, and it helps them to strengthen up their legs, since they will be walking a few short months after that.
Baby wearing: babies like to be held, and its good for them. In addition to lots of skin to skin time when they are small, you may want to get them used to being carried. We chose the ergo baby carrier since its safe, versatile, and pretty much the modern version of the papoose, which has been used for thousands of years for many millions of babies. When they are older (over 6 months), you can graduate them to a backpack.
Pacifier: Wubbanub. Worth it. Best thing we ever bought for our first critter, since you can start them on the pacifier, then eventually poke a hole in it for them to chew on, then cut off the pacifier completely and they still have the little stuffed animal to snuggle. We had one at daycare and one at home for both kids, although my son seems to be more interested in his thumb than the pacifier most of the time.
Boppy: You will probably be spending a lot of time holding your baby when they are tiny, and this makes that activity much more comfortable for you than using a regular pillow. The cover is washable.
Books: The "What to Expect" books served us well for educational reading. My daughter loved "All My Friends Are Dead." Its a strange children's book, but you get chuckles along the way. I think I can recite most of the Dr. Seuss books by memory, along with Pout Pout Fish. The most important thing here is to read to them while keeping their attention. Its a great bonding activity and helps them with language development, cadence, vocabulary, etc.
Pics added. Please dont judge. We are in the middle of a flooring redo at present.
Rocker:
Papoose:
Bouncer (note wooden blocks down below because he is still so little):
Boppy:
