For easy cheaty meatballs for pasta I sometimes use Morrisons pork sausage, fry em up, cut em up, stir into bog sauce with red onion and mushrooms. 1.99 for 32 meatballs, you can get about 4 good size chunks out of each sausage.
I know that's not much help considering your turkey disappointment, but it's only about 40p more than buying a pack of turkey mince.