Cats love climbing and jumping so this is easy for your cat to learn and impressive when showing off to friends.
Place two chairs with non-slip surfaces about 25 cm (10 inches) apart and put your cat on one of the chairs. Show the treat then withdraw your hand until it is over the other chair. Your cat will follow (walking) and when it noses the treat give the reward. Repeat this with the chairs a bit further apart until they are sufficiently separated to need a jump. As it jumps, say ‘Milly jump’ then instantly give the reward in your hand and maybe one more. If you want to turn this into circus training, add a hoop!