Soup, Stew, Casserole, Beef Bourguignon, ratatouille, lamb tagine, fish and chips, all day breakfast, scrambled eggs on toast, beans on toast, creamed mushrooms on toast, use it instead of a bun for burgers/hot dogs/fishfinger sandwich, croque monsieur/madame, serve bread/toast with pate or baked camembert, eggy bread, french toast.
Sandwiches can be made into a full meal with a suitable filling and sides, something like you'd get in a pub at lunchtime.
Alternatively you could make bread and butter pudding - yum!
Leftovers can be turned into breadcrumbs, croutons, bread sauce etc.