Where can you find candles that drip?

I think candles must be designed not to drip so that all of the fuel lasts longer. The drip factor depends a lot on the surroundings, if it's left in a bit of a draft, then the flame flickers about more and makes the molten wax pool a lot less uniform. You can also try messing up the wax pool yourself a few mins into the burn to start the dripping off. In my experience it has been better to use thinner candles if you want dripping.