You could always boil it, ground it, and put it in sausage. Liver gives any sausage a heartier flavour. If you freeze the sausage right away, you could have a good store for breakfast for months. I've made a traditional sausage once and it tasted great, though I took a short cut and slightly ruined the texture. Moral of the story : Recipes are usually specific for a reason. Anyway, whenever I have fried liver it has been tougher than I think it ought to be, but then again I'm no professional cook, so maybe I just don't know the secret of the technique.
Other ideas :
Pâté
Seared (maybe after being marinated with a little brandy and some spices and olive oil)
Grilled
Kebab