"I suppose with names like Hermione and Nymphadora, you are positively normal." Crookshanks purred at that, and bounded his way up to the mantel and knocked over the jar of floo powder. It covered the floor as Herpy was about to have a fit, but Cissy ordered her elf to leave it be as the cat walked into the thickest part of the powder and started to kick his back paws through the soot, effectively getting the powder into the fireplace and turning the flames green again.