http://www.flickr.com/photos/terrymcbride/2508953631/
http://www.peeters.com/300d.html

Here are a couple of links to nifty home built releases.
I am going to give the peeters one a go, looks like a good money saver and extremely easy to build.

Call me tight fisted but I resent paying through the nose for accessories :)

It takes one tree to make a billion matchsticks, but one match to burn a billion trees