You could get one at most anywhere. I've seen them at Target, Pier One, Pottery Barn and many other places. I picked up mine from my basement! My sister in law gave it to me and I never really used it. It always seemed too big for anything useful. Seemed like more clutter to me, more junk. Exactly what I'm trying to get rid of!
My tray is a dark brown with a leather look to it. I could see a shiny brass one in a Victorian kitchen and a rustic wood one in a country style kitchen. Maybe a stainless steel one in a modern styled kitchen. Anyway, with this being the only place any items are allowed to be, my counters stay pretty neat. Well, except for the stray library book...(which belongs in the large basket in the living room...)