Get your dog to sit and stay in a room. Hide some treats around the house and get the dog to find them.
Start off hiding them in easy places – on a chair, next to a wall along the passage, on a bottom shelf on a bookcase, behind a table leg.
Watch your dog use his sense of smell to find the treats. As he gets better at this, make the hiding places more difficult but still make it fun for him.
Or, try hiding yourself, call your dog and see how quickly he finds you.