If you have cats you know that they absolutely adore catnip. So here are some ideas to make your cat's day:
Plant catnip in a large bowl. Keep it away from the cat until the bowl has a nice carpet of catnip on it, and then place the bowl in a sunny spot. Watch your cat snooze in it all day long.
Alternatively, make a muslin bag, mouse-shaped if your sewing skills allow. Stuff the bag tightly with dried catnip leaves and sew up. Add a little tail and present to your cat with compliments.