1: Something useful - like a matching collection? (5)
2: Tramp and rake over green (5)
3: One fowl and yet two foul (9)
4: Drawing, for example, a bit of a cartoon (3)
5: Crew member is one in operating room (3)
9: A heron regrets losing its wings (5)
10: Appreciation without hot water containers (5)
12: Sounds like a wolf on the coast (3)