This is more for the looks than for any practical reason. But you can actually place a torch on top of a crafting table or furnace. Why you would do this isn't important. It's about the fact that you can.

To do this, put a "transparent block" behind the crafting table. This can be something like a block of glass. Now, while facing the crafting table, try to reach out and put a torch on the glass. You should now have a torch on top of the table.