Custom Colour / Design Coin Banks. All colours of our existing models can be changed - minimum 3,000 units up for most models. Custom designs - minimum 5,000 units depending on complexity, size, weight, print details, number of paint colours and packaging. Cartoon concepts with round edges usually work best. Send in your design brief with ideas and work closely with our creative design team to create that perfect coin bank!. Indent Ex China Factory 16-24 Weeks (negotiable).