This link is to a blog by Cody, of Colorado Spankers. It's all about spanking furniture and similar things. Many of the benches pictured have links to the sites where they can be bought. It's also full of great, creative ideas... maybe even some things you could do yourself. Just be sure to look through to some of the older posts. I think there's a lot of great material a few years back.
http://spankingbench.blogspot.com/