Stop wasting expensive sanitary products and chants of "mousie mousie" and toss your kitty a giant bloodied tampon. Guaranteed mood enhancer.
US$2 from theshancan at Etsy.
A little too gross? How about an eyeball instead. Your kitty can pretend they've just spiked it out of your head. Nom, nom.
US$10 from hannapt at Etsy.