~ My favorite background right now is a set of wooden slats I found at a hobby and craft store. I have thought about nailing them all together, but I like to arrange the colors of each slat according to what I am shooting.
~ I am on the search for a neat piece of slate to use for a backdrop. Slate is really useful for food shots, just make sure when you purchase a piece it if food grade. You know, so that you can eat the yummies you are taking pictures of later.
~ I recently had a discussion, in a still life photography group I belong to, about using old cookie sheets for backdrops. I am also on the lookout for those as well. I want ones that are nicely patinated from years of use.
~My favorite backdrops for front on shots are white and black painters canvas boards. I found a pack of two, for 14 dollars, at a hobby store. I use clamps to hold them tightly together when I need a larger span for the background, or when I want to create a corner to shoot in.
~ I also use foam boards, and then usually drape them with different scarves (that I picked up cheaply) and cut in half. They tend to be the perfect length without a ton of left over fabric to worry about. Plus, they are light and I usually do not need a clamp them to hold them in place.
~ Cheesecloth is often a go-too background cloth for me. If you have a hardware store near you, check it out. Usually you can find cheesecloth for super cheap there. A hardware store is also a great place to look for tile pieces, that are on sale, that can be used for backdrops as well.