Use Customizer tool to create your own coffee mug. Just click on "Add Text" on the left to show the writing area on the Mug. Then write our custom text (which could be a love letter to your love or best wishes to your Dad). By the way, it's not just limited to Mugs. Click on "Products" to chose other products.
Once finished, just click on "Add to Basket" to have the beautiful Mug (or other item) delivered to your doorstep.