It is definitely possible, and there quite a few mockups made, but we haven't really tested some of the printers, and need to procure samples to assess first. There are a couple shirt printers in AU, and I should have a sample from them in a few weeks. Stickers and all is possible, some them are really cool, but they are expensive. One thing I did think was cool, bar coasters, cork bottom print top.
It's all a work in progress.
It's all a work in progress.