Aside from other apparel items, what makes a good, sublimatable add-on product?

As strange as it may seem, a coffee mug is still one of the most popular sublimatable items and makes a great add-on. They’re inexpensive and versatile. Most people may not wear the same shirt every day, but they might use the same mug every day. The more it is used, the more the image on it will trigger a sentimental memory. Mugs can be sublimated two ways. The first way is to sublimate mugs in a cylindrical mug press. The second is to use a silicone mug wrap, which clamps onto the mug then the mug will go into a convection oven. By using the oven method, multiple mugs can be sublimated at once versus one at a time in a mug press.

—JDS Industries