infinThat mat looks cool on first glance, but think about it...
Brass, plastic, rubber, stainless steel aren't affected by magnets. I've seen the same exact mat offered by several vendors over the last few years, and every time I see it, I start out by saying "Hey that looks neat... waaaait a minute". Would be better if they molded in little ridges between the squares to keep non-ferrous items in place, too.