If you want to spend money:
http://www.sjscycles.co.uk/product-Shimano-Wheels-Manufacturing-1-1-4-Inch--34.9-mm-to-1-1-8-Inch--31.8-mm-Front-Derailleur-Shim-Pair-18557.htm
That was just a quick search. I'm sure it can be cheaper. Otherwise, I'd just spend some time cutting plastic bottles.
This was posted in the US thread last week, but more people can see it if I open a new topic. Let me know if prices are unreasonable. I can get close up pictures too. All prices include shipping from US, I will give combined shipping discounts. Let me know if you've got any offers or...
I'm looking for a 27.0 seatpost with setback. I have a thomson right now, but a straight post just doesn't work for me. Trading is fine by me too, but let me know any offers you've got.
Thanks a bunch.
p.s. I'm in US.