Who has made a mirror for binoculars?

I have a lovely Sky Window that I use with binoculars, but I would like to try my hand at constructing my own type of reflecting mirror. I have heard and seen a couple pictures of this, but it has been too long for me to remember where. Anyone done this and care to show a picture or send me a link to some instructions about how to do it or what stuff to use? I have heard of copier mirrors utilized, plain mirrors with a bit better quality, etc. The mounts have varied from wood (my preference) to all sorts of things.

Thanks for reading.

This gentleman's :

http://www.homebuiltastronomy.com/downbino/index.html