Knitting Pattern Central lists several dish cloths. http://www.knittingpatterncentral.co...dishcloths.php
Also On the free patterns page of this site under house hold items are some dish cloths. The one pictured called simple summer dish cloth is nice I've made it a few times and shows off ombre quite well. It has a gart edge- to prevent curling and stockingnet stitch with a slip stich design. Also if you want to go shopping the Mason Dixon Knitting book has a lovely ball band dish cloth pattern. This is evidently a free pattern from the Peaches and Cream ball band- but I can't by Peaches here. Anyway Sugar and Cream works just as well.
Good luck, I love dish cloths and have done many in all different patterns.