How much do you think you need something will dictate what you use.
I carry nothing but a Come-A-Long and a chain with me and I carry it in my Toad. If stuck, I bury my spare tire in the sand with a chain attached or if in the desert spare tire covered with a big pile of rocks.
If in dirt dig a trough slanting down away from your vehicle and make a "TEE" at the lower end to put a timber, log, etc crossways with a chain attached.
The person that suggested the BAR driven into the ground had a good idea. To improve on that use several bars in a line and attach the vehicle to the bottom of the nearest bar and hook the top of that bar to the bottom of the second bar, top of 2nd bar to bottom of 3rd, etc until you have enough hold for recovery.