Migas - suggestions requested

So, since I saw it on a spanish cookery program, the idea of migas seemed an interesting one.
It's a 'leftovers' recipe. The essence of it seems to be fried (leftover) bread, with 'stuff' to flavour it.
The suggestion is chorizo, gammon ham, bacon.

I need to try and figure out something that is vegetarian - something that'll add flavour and texture to what amounts to fried up breadcrumbs.

I'm thinking perhaps chopped pepper, possibly applying some egg to the mix and stirring in. But ... well, anyone got any suggestions, for what could be included?
Maybe chopped pepper and onions.