A self-employed carpenter accepted an offer to work for a contractor on a full-scale hotel renovation for a minimum of two years. Because the carpenter would be working on the renovation for at least two years and would not need his own equipment, he agreed to sell his table saw to a friend for $500. The carpenter then found a favorable mortgage that permitted him to purchase the house he had been renting. The mortgage was for a 15-year term, which allowed for an earlier payoff of the principal. Feeling financially more secure than he had in some time, the carpenter treated himself by purchasing a lifetime membership to a nearby gun club. Under the statute of frauds, which of the carpenter's agreements does NOT require a writing?