For some soups, a great way to serve them is to toast a thick slice of one of the uncut loaves (so you can cut it thick), then place it in the middle of a wide bowl and serve the soup on top of that. Sometimes, you put another sauce that harmonizes well with the souo on the bread, first.

Then you eat it as the soup absorbs into the bread, experiencing a combination of soggy and dry bread textures along with the flavour of the broth (and sauce, if present).

It wouldn’t work with a standard loaf of bread, as both the slices and the bread itself aren’t thick enough to keep it from quickly going fully soggy. Breaking crackers or dipping toast into soup are pale imitations (ok, dipping toast isn’t that far off, but I still prefer a good thick piece of toast).

Also, if you take a baguette and cut it into thinner slices then toast/bake those slices, you end up with a much cheaper version of those artisan crackers that are just dried pieces of baguette.

Also, look up beef wellington for one of the more extreme uses of non-standard bread.