I'll have to make some for mine, they're named Mr Duke & Dr Gonzo after the characters in "Fear & Loathing in Las Vegas" so they need a huge drug stash.
Unfortunatly my cats don't get chilled on catnip, they get vicious. No catnip toy I've made them has lasted more than 30 minutes, then when they've done with the toy they start destroying random objects or each other, or me.
We haven't let them have catnip for a few years, (following an event where they managed to get in a drawer where we kept the box of catnip) but now they're a bit older and calmer they might be okay...
That is scary! Well if you ever decide to try giving um catnip again I hope everything works out safely