I bought an anti fatigue mat from Menards for around $25. It is longer than my ironing board so it sits in front if it. I also got an anti fatigue mat at Meijer (like the kind that you put in front of your sink in the kitchen) for $9 on clearance. It sits in front of my cutting table. I make a point of not standing anywhere in my room for any period of time unless I am standing on one of these mats. It really made a difference in my poor old arthritic knees!
this is like the one I got but cheaper.
http://www.menards.com/main/flooring...141-c-6527.htm