I love these pinwheel patterns!

https://groups.yahoo.com/neo/groups/MonthlyDishcloths/info
http://monthlydishclothoverflow.blogspot.co.uk/
http://www.ravelry.com/groups/monthly-dishcloths-knit-a-long

This pattern has taken more than one ball of yarn and so I either need to make it in more than one colourway or find a colour that I have more than one ball and start again.