It's good to get them out doing that sort of thing early. It shows you don't always have to "buy" something to get something of value. I went for a hike with my 4-year-old boy the other day and we found a large blueberry patch on our property. After returning with some buckets, we cleaned out about 1/4 of the patch and he also helped me turn them into blueberry muffins; which he devoured. He's already looking to go back and get some more, now that the muffins are gone.