Below are directions for a simple end table made from pallets.
Find free pallets from Craigslist. If not available, you can purchase them locally for very little money.
When searching through the pallet stack, look for the pallets with the most usable wood. The length of the slats is ~ 3 feet. The thickness varies from ½ to ¾ thick. The width of the slats can vary from 2.5 to 6 inches.