Callas Bamboo Bathtub Caddy Tray, Brown Callas bathtub caddy bamboo bath tray with extending sides, reading rack, tablet holder, cellphone tray and wine glass holder. Callas has designed a unique bathtub caddy that will give you an ultimate relaxation. Everything within this caddy has been ergonomically designed for the sleekest, easy-to-use, simplest bath time enhancement.