Mug Design and Custom Printing Module for OpenCart
https://codecanyon.net/item/mug-desig...
http://opencart-modules.solvercircle....
-- Shoppers can upload their own design/image/logo or clip-art to print on Mug while shopping.
-- You can add text or image on the Mug.
-- Can select multiple image/logo from the existing clip-art to put on the Mug.