Tim and Ruth over at Windfire Designs are offering up their gorgeous hand crafted stainless steel line winders!
I have been wanting these for years...
These are beautiful and easy to use, designed for single line, but you could easily wrap sport kite lines on them as well.
The E which is good for smaller linesets and can slide into a kite bag easily
The Otto is a bigger beautiful winder with grand swoops and this one holds a lot of line!
Find them over here: http://windfiredesigns.com/Products/index-products.html and tell them I sent you!