Instead of being worried that you've left some microscopic shards behind, we're discovered a very.... well, interesting technique to make sure you've grabbed every little piece, and you might be surprised to learn that it's already in your pantry.
That's right, bread. Not only can you use it to pick up glass shards that you might have missed while sweeping, but leave the loaf out and treat yourself to a sandwich when you're finished cleaning the kitchen!