Apparently the answer is eat ice cream!
Evidence that all the fun happens while Mom is away doing something else. On Thursday I had a Relief Society meeting and was presenting on coupons and how I generally go on the cheap for groceries. Phil had Pete for the night. They went to Cluver's to get ice cream and then headed over to look at the mowers at Menards afterwards. The joy of a boy, show him a big machine and he is thrilled!