When you transplant your catnip from a small hanging basket into a larger one, be sure to bring the old, intensely catnip-scented basket into the house and absent-mindedly place it on a shelf behind a bunch of loud bangy objects that can be easily knocked down. This will provide great entertainment and exercise for both you and your cats. (Your exercise comes from first dashing to see what the huge clatter was, then bending over to pick up all the bangy things.)