Nosework
Sounds like plastic surgery; but for dogs, it is a fun activity, using their amazing noses. One of our dogs Scout, is a quirky fellow. He is pretty sensitive and shy, although he does love to play. He is a handy farm sheep dog, but he gets a bit distracted. He came into his own doing nosework. He loves searching for a scent, or food treats and will methodically work a room or outside space until he finds what he is looking for. When scout enters a room with his nosework harness on he means business.
Nosework is different to tracking, and is easier to setup. You can just do it at home, or as a competitive sport which is growing rapidly in popularity.
A few random links. It is not intended to be a definitive list, but an opportunity to read a bit more about nosework.
K9NWSource – Nosework supplies