1. Tent, Shelter
With the increase in popularity of overland adventure travel, there are a number of shelter options for camping off-road. There are a number of crafty new designs that incorporate tents into the bed of trucks or that fold out and rest on the hoods of Jeeps, vans and trucks.
For those going the traditional route, a standard ground tent should suffice. Just make sure the tent is in proper-working order before the trip – otherwise, you may be camping under the stars unintentionally. Useful but not necessary is a nice ground mat to help provide a barrier between you and the ground, and most are also mildew-resistant in case they get wet.
2. Water
This might appear to be high on the list, but in reality, people can often survive in many parts of the wild without shelter and food for a few days, but they will not survive without water.
Always plan to carry enough water for everyone in the group – in fact, take a little extra. It’s better to come home with more than to run out while on the trail. Keep in mind, if you're traveling to drier, more arid climates then pack more than usual. Staying hydrated on the trail is extremely important.