Update from 2013: I've gotten some emails asking about the basket featured in this post.
I purchased it years ago (back in 2006) from Pottery Barn Kids.
It was called the "Sabrina" diaper Caddy with a liner
and I think you can still get one from their website!
It is currently stationed on my sewing table in my art studio --
it holds sewing supplies next to my sewing machine.