blindfold for woo woo training? A neck-protecting scarf like the one used in razorblade capoeira? A Thugee garote? A doo rag to show which sword gang you be claimin'? A bandage/tourniquete for sword cuts? The opposite of a white surrender flag?
I got it!
It contains the soul of an evil Djinn who has plagued the carpet store ever since they opened a mysterious dusty crate of Persian rugs they found in the basment.
Your students have defeated it in combat by steel and faith, banishing the wicked Djinn for eternity to confinement among the sacred woven cords and anointed medium pile of your special carpet sample.
That is why it must never be cut, for the devilish Carpet Geinie will once again stalk the earth causing peoples rugs to retain odour and develop odd discolored areas that just make the whole room look cheap.
MWAA HA HA HA HAAAAAA!!!!
If Rock Ape or Yoj were around, they'd be all over this for you. Possibly with pictures.