and because I've long been admiring the crocheted wash cloths I see occasionally on the interwebs (like these and these), I bought a couple of balls of said yarn and hooked up two small cloths...
The cloths are lovely and soft, but I must say that I found the yarn to be annoyingly splitty.
There are lots of washcloth/dishcloth patterns to be found. I used the 'Oh so soft baby washcloth' pattern by Theresa Grant, available as a free download from Ravelry. They were quick and easy to work up (splittyness aside) and I think the stitch pattern is really pretty.
Hook :: 3.5mm
Yarn :: Rico Creative Cotton which is an aran weight yarn
Pattern :: as linked above