Rob Banks writes: I wanted to share a website that shows another sort of great reel, the Albflyer Team website. Click on the "Bilder" link on the left and you will see pictures of their reels. I have used one of their aluminum ones....it was wonderful!!!! They used to sell a kit to make your own - not certain if they still do or not. (April 2010)
Below is a Google translation of the web page Rob references. Click on any image to enlarge.
Wooden spool as a kit: