Yup. Croutons, french toast, PB & J sammiches are high on my list of foods I miss and haven't found a good GF substitute for.
I used to eat salads all of the time and then sort of didn't eat them a lot for a good year because it just wasn't the same without croutons! But I've found that if I add in something crunchy I can deal with a crouton-less salad. Almonds or walnuts, radishes, carrot slices...