As this was my first attempt I used a pattern I'd found on the Lion Brand website called the Bluebird Beach washcloth. The pattern is over four rows and easy to remember and only took a couple of hours to complete.
Having completed my 'prototype', I went in search of some more knitting cotton (I'd not got as much left as I thought) and found some organic cotton made by Twilleys of Stamford at John Lewis'. It's from their freedom sincere range and comes in a lovely range of colours.
I've now started on my first washcloth using a darkish pink (see below) using a simple basketweave and seed pearl pattern I've put together myself.
I did wonder why people (the Americans in particular) used knitted washcloths as I'd have thought they'd be a bit soggy compared to a towelling facecloth, but having used my prototype in the shower I'm converted. It was easy to use, 'felt' better than a towelling one and dried just as quickly. I foresee a few people getting these as birthday/Christmas presents!