after an unsuccessful search thru the bookstore for something cow related, i mentioned to the woman and her daughter that i had some cow earrings at home that i sell for the farmer's market. and although the 12 year old girl she wanted it for doesn't have pierced ears, a necklace would be just the ticket. some minor adjustments and the earrings are now a cow-tie necklace for the birthday girl.
p.s. i think this was the first real commission. :)