Supertotem: A sort of item that can hold 3 totems in one item for portability and can be kept in stacks so when the player dies with the super totem offhand they will not die. It cannot work in (x0) totems inside it but must contain atleast one for it to work. To insert the totem would be easy to craft a recipe for it.
I've made something like this before so I think it's certainly possible.