Joe, once upon a time..... back in the early 80's I did just that with a friend and started a business making aquarium furniture. Mostly in the Northwest market but did cover most of the Western US before we went our separate ways.....oh well. Still see an occasional piece that we made from a pic posted up on the Ol' Interweb or CL adds and my QT tank still sets on one from 1985. I've made a handful over the years for different people but most are unwilling to pay for the quality and effort put forth.
Cheers, Todd
Cheers, Todd