Okay, in this case "free" costs a little bit. That's only because we were already buying things to put together fruit baskets for gifts, so we didn't spend money beyond our budget.
This week we had some gift baskets to put together and Monkey needed an activity. I invited him to join me by counting and sorting fruit and putting it into baskets.
Skills he worked on? Pride in workmanship, counting, sorting, identifying fruit, helping, work ethic, evaluation...
And he WAS proud!