ritual wand with streamers; ōnusa
A Shintō purification wand: a pole with linen or paper streamers, used in ōharae (grand purification) ceremonies. Archaic in everyday language but still seen in ritual contexts.
The Shintō priest waved the ōnusa to perform the purification.
great demand; high popularity
Figurative use: something is so popular it's like a ritual wand being waved around. Often used in set phrases like 大幣を振る (to be in great demand).
The newly released game is in such great demand it's like an ōnusa being waved.