I recently made a custom shelving unit for a friend who simply needed her microwave above her stove and not on her counter. Originally it was just going to have one board going across the bottom, but then I thought "Well that's boring." I want it to DO MORE. There would have been so much space above the microwave, so I thought "What a great place for a butcher's block!" So I made an end-grain butcher's block out of all the scraps I had sitting around my shop. But how to easily slide such a monster in and out of the shelf? Why not a leather strap? Great idea! I love incorporating wood and leather... so I did. Now it looks like a butcher's block suitcase. I'm okay with that. But now there's all this boring un-utilized space below the shelf. How about a handy little spice rack made of tiny jars? Great idea! Should I sink the top into the shelf and secure it with epoxy? But won't it be a hassle to have to unscrew the jar every time you want to remove it? Good point. Magnets...? I do love magnets... I'm somewhat obsessed with magnets... Magnets it is! I sunk seven rare earth magnets into the shelf so the jars attached securely and easily from below. Let's stop there. I don't want to overdo it.