Thank you all for enthusiastic comments - it was Kathryn (k3n) who started me on these OBWs and she did warn me it would become a habit! And I have seen her latest which is gorgeous - wait till you see that!
They are so much fun to make - do have a go at them.
For fans of the cubes there is a new book appearing in April specifically focussing on them
http://www.amazon.com/One-Block-Wond...3831518&sr=8-1
which I suppose I will HAVE to get, tee hee!