Wrendale Halloween Mug & Tray Set Dog & Cat by Royal Worcester Bring a touch of magic to your day this Halloween with this charming trick or treat mug and tray set. Designed by artist Hannah Dale, the set featuring two porcelain mugs and a melamine tray is adorned with delightful illustrations of cats and dogs dressed up in Halloween costumes. The Mug and Tray Set includes 2 small mugs on a matching melamine tray. Each mug measures approx. 9.5cm tall with a capacity of 0.3L, the tray measures 21cm by 14cm.