Tazos were available in packets of Walkers crisps, which I don't eat, so I don't know how I got so many Tazos. They feature slots on the side and they can be fitted together to create various shapes. I have even got 3 Tazo slammers.
I also have the full collection of Star Wars Tazos, as well as some World Tazos, Pokemon Tazos, Dragonball Z and Monster Munch Tazos.