A boink type knot with a bell inside, feathers at the end and all sprayed with catnip spray: IR-RE-SIS-TIBLE
Plucked knot
The plucked knot is made of a knotted flexible sheath where a bell slides. Its end is lined with feather and the toy is sprayed with catnip.
As it combines several attractive functions, your cat will love it for sure!