I rigged up the first prototype out of cardboard.

It's not all that big, but, it's cleverly designed to be much larger then it appears to be. Probably large enough to hold a palm pilot, a cell phone, a wallet, a full sized check book, your change, and your keys. When it's all folded up, it's rather smallish and circular like a regular sporran.

If anybody is even remotely interested... (And for some reason I don't think to many people are) I might try to post a crude diagram.