Currently I have a lot of bread. It's not bad, only dry because it's a bit old. I don't want to throw it out. What can I do with it?
Whenever I have some very dry leftover bread I run it through the blender and make it into breadcrumbs, whose uses are legion. In particular, I find that they are a necessary component of frittata and meatballs. After blending, sift the crumbs to remove the bigger chunks and store in an airtight container. Discard if it becomes moldy, but if you store it properly it will keep for weeks.
If the bread is not very dry (let's say that you can still cut it without it turning into a cloud of crumbs), you can make bruschetta: lightly toast it, rub garlic on the cut surface with a heavy hand, add olive oil and a sprinkling of salt. Yummy, not so good for your social life.
Not-too-dry bread can also be cut into little cubes that you can dry in the oven (the microwave also works, but be careful lest you set them on fire) to make croutons, the best friends of boring vegetable soups.
Oh, I realized that there is a canonical entry on the many uses of stale bread,