1.) maybe? but I highly dought it... (very highly...)
2.) there is suck things as clay birds, but not the one your thinking about (I think) well anyway... I don't think so...
1.deidaras clay bird (I guess a fan could make one of clay? (or c4 if they rlly wanted to...))
3. hidans scythe (I've seen them made of anything from cardboard to metal...(some are really nice))