To make your mugs a bit more special and so they stand out from the crowd, you can add the following options:
Gold or Silver (Platinum) Rim - applied to the top rim of the mug and/or a gold or silver (platinum) handle flash - applied to the handle. Or a solid spot colour rim and/or flash instead of a metallic.
Back Stamp – this usually features a logo or some information about the designer and can be in single or multi-colour (not available for dye-sublimation).
Inner Stamp – similar to a back stamp, this is a decoration applied to the bottom inside of the mug (not available for dye-sublimation).