One is a bamboo mat to roll sushi. This may work better then the aluminum foil or in combination with the foil for the candied sushi I have made and loved.
The other two are molds: one round and one square. I attempted to use the square one to make a “beginner" sushi for the kids. I boiled some baby carrots with a sprinkle of ginger and in a separate pot made some short grain sticky rice. I attempted to assemble my beginners sushi and it seemed to work. It stayed together when I took it out of the mold and when I sliced it. It even looked okay. The kids and the husband were not amazed or inspired to eat. I had messed with their beloved rice.
I think I need to find a friend or a class, or two.