Introduction: Shelf Re-Invented - Piggy Bank & Key Hanger.

About: Thanks for stopping by! I'm Nir, a physics PhD student studying E. coli bacteria. On my free time I enjoy making all kinds of things - from laser cutting & 3D printing to baking, cooking and doing science expe…

Everyone has shelves in their homes, and I had one right by the entrance door which had quite a mess on top of it; Keys, change, and more. So I tried to figure out a way to make it a bit more useful and neat and this what I can up with - a simple upgrade to any shelf. Follow these steps to make your own coin-bank, key hanger shelf!

Step 1: Tools and Materials

Materials:(pic. 1,2)

1. Wooden shelf - you can either use a new one or an existing one.

2. Glass jar with a screw on lid.

3. Screwable hooks.

4. Small screws.

Tools: (pic. 3)

1. Screwdriver.

2. Drill with wood drill-bits.

3.Marking pen and pencil.

4. Tin shears (or something else to cut the lid with).


6. Ruler.

7. Fast drying glue.

Step 2: Measure and Marking


Measure your country's biggest coin - you need it's diameter (pic. 1) and thickness. I made the holes a bit wider than our's and three times thicker (pic. 2).


1. Pick the the spot on your shelf where you'd like the slot to be (pic. 3). Make sure you have enough room around it to place the lid without it sticking out of one of the sides.

2. Mark the shelf with shape of the slot you're about to make (pic. 4). Do the same with the jar lid (pic 5) - this one you can make even a bit larger since it's hidden. I marked it with white tape so it's easy to present but you can just use a marking pen.

Step 3: Drill and Cut

1. Drill the wooden to create the coin slot(pic. 1). You may want to use a smaller drill and refine the slot with sand paper or something similar (It didn't really bother me).

2. Use a screwdriver to make a few holes in the jar lid.

3. Use tin shears and pliers to make the hole the appropriate size. It's important that you bend the metal to the inner side of the lid so it won't interfere later on.

4. Make a few holes in the lid for screws. Use a screwdriver to gently make small holes (or you could put a screw in and take it out)

Step 4: Put It All Together!

1. Apply a small bit of glue to the outer part of the lid just to hold it in place (pic. 1).

2. Screw the lid to the bottom side of the shelf (pic. 2,3,4). Use enough screw to support a heavy load (once the jar gets filled up it's pretty heavy).

3. Select a location of the key holders on the bottom side of the shelf. Screw the hooks in the right place. Make sure it's not too close to the edge so the wood won't crack. Also don't screw it too deep so it won't stick out of the top side. (pic. 6,7,8)

4. Hand the shelf back up. (pic. 9)

5. Screw the jar tightly. (pic 10)

Step 5: You're Done!

All set! now you can sit back and enjoy!

When your jar fills up, just unscrew it, find a use for all your change, and screw it back for another use!

I also use mine to hang gloves at winter :)

Hope you like it, and if you do please vote for me in the shelving contest!

Comment any feedback or new ideas if you got some! I'd always like to hear.

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