I love my slow cooker!!!!
I do a nice beef and ham casserole in it - onions, peppers, garlic, carrots all chopped with diced beef and a tin of ham diced up. Add a tin of tomatoes and some herbs and seasoning.
Also curry is good, I fry onions, garlic, ginger and spices in fry light then add this with meat and a tin of tomatoes to the slow cooker. When it's cooked I add some FF natural yoghurt.
Chicken casserole - chicken with carrot, onion, swede and veg stock.
Basically any casserole recipe but with less liquid than the recipe calls for, one tin tomatoes doesn't look much but if you add extra liquid then you end up thickening it with flour and using extra syns!
I really couldn't be without mine.