As you may or may not already know I save all of the glass jars that come through our door. They are good for so many practical applications and are a good, cheap craft supply to have on hand. I soak the jars to remove their labels and give them a run in the dishwasher and unless you are storing food in them they are ready to use.
Make sure you have plenty of holes so the baking soda can absorb any odors floating around.
When your holes are all done turn the lid over and gently tap down the raw edges. This doesn't need to be perfect and can be skipped altogether if you choose. I just did it so I could feel better about my kids changing these.