If it’s cold outside, and your baguette happens to be fresh out of the oven, you can use it to warm your hands.
In crowds, you can create space for yourself by wantonly swinging a baguette. Another method is to cradle it in such a way that it juts out a foot or so from your side, as no self-respecting French person would dare come into contact with someone else’s baguette. It just doesn’t happen.
A hard baguette can be pummeled and used for breadcrumbs, which can then top a tuna casserole or be fed to hungry pigeons.
A really hard baguette can be used as a javelin, cane, poker, pointer, paperweight, or kindling.