My sister has invented and created this. Its easy to make it!

Now let's begin!

Step 1: What You Need:

What you need:
•Black tape
•Ledlights (as much as you want)
•CR2032 battery (as much as led lights you want)
• A white paper

Go to the next step!

Step 2: Led Positioning

Take the long side from the led light, the black tape and the battery. On the 2nd photo you can see the 2 different sides (+ and -) on a battery. You should use the black tape to stick the longer leg from the led-light on the plus side on the photo on the battery. Do this with as much as led lights you have. When you are ready, proceed to the next step!

Step 3: Stick the Led Light on the A4 Paper

First, make a circle of the black tape and cut it of. Next stick the circle tape to the side where you stick the led light on the battery. Now you can stick it on the Paper too. Stick it as shown on the second photo. Repeat this step as much as you want. Ready? Go to the following step!

Step 4: The Black Tape

If you want, you can make using the Black tape a sort of piano tiles to make it look more realistic. You don't Have to do this Step. Go to the following Step.................................................................................