I've done the same as poor-rel, and can't find anything either. As he said you could melt some, and I found this site
http://www.theosmusic.com.au/subcat.cfm?Section=Woodwind&category=Recorders&subcategory=Soprano , which states the price and the description, and it says that a standard recorder is made of "Angel ABS plastic", so maybe buy a few recorders and melt them, and mold them maybe...
All the best with your searching...