Bamboo for my cats

Wow, here's an interesting site: http://www.squarecathabitat.com/

It's designer furniture made from bamboo for cats. I like some of the stuff and it would look great in our house. However, I'm not sure if I want to order it. You see, I have a bunch of solid bamboo hardwood left over from when we did our floors. I wonder if there's someway to make this furniture myself using the pieces of left over wood. Personally, I like the idea of using what I already have instead of buying new stuff. I think I have a weekend project.