>>281445781
VIZ has a note, but so does Furinkan so: "The spirit binding rope is a Shimenawa (標縄), or "enclosing ropes". They are made to ward off evil spirits. Hanging from the shimenawa are zig-zag pieces of paper called shide (紙垂). They are often hung from shimenawa or are attached to the wands of shinto priests for purification ceremonies."

These have come up before.