What can I print sublimation ink onto?

Sublimation ink needs polymers to bond with which is why Polyester is the most popular textile to use. But basically any substrate that has been coated with a special polymer layer and can withstand the high temperatures needed for a successful transfer can be sublimed onto. Ceramics, metals, mugs and mouse mats are amongst the more popular items. We are even starting to see 100% cotton t-shirts with micro-poly outer weaves that now enable the sublimation process to take place.