My kids refuse to eat bread crust. For a long time, I didn't give in. I figured if they would just get in the habit, it would no longer be an issue. I'm the one who learned the lesson. They simply won't eat bread crust.
So now, I cut off the crust beforehand and toss it into a container in the pantry so it doesn't go to waste. I also toss in the heals and any other unused or stale bread, whether it's white or wheat. It all goes in together. I leave the container open to the air -- its lid is ajar -- so the scraps will dry out (but still be safe from dust).
I add scraps every day until the container is full and the bread is completely dry. (You see, moisture is what will make it go moldy. Dry bread will last forever.) Then I toss everything into my food processor and make bread crumbs for use in recipes such as this. Once you have crumbs, you can store them in an airtight container. When I see the pile of crusts I otherwise may have thrown away, I cringe. It really adds up. It feels good to be resourceful!