Well I have this crystal cube with dolphins carved on the inside and I wanted to make something that would illuminate it and make it look cool.

Step 1: What You Need

You will need:
The crystal cube or something similar
Tape (electrical tape works best)
LEDs, at least three
Button cell batteries
Bottom of an Altoids tin
Little rubber thingies that are on some boats to keep the window from scratching and/or denting part of the boat.
The lid to an iPod package or something like it. However, it must be clear.
Marker
Screwdriver or other large diameter pointy object
Paint (optional)

Step 2: To Begin

Sand the Altoids bottom so the paint will stick to it. Also make it so that the hinge part isn't so noticeable. Then wrap your tape around it if you want to paint the top. If not, don't wrap it in tape.

Step 3: Paint!!!

If you are going to paint it paint it now. At first I tried painting it pink but the black showed through to much so I went with a dark blue. After it dried I took the tape off and replaced it with fresh tape because it looked better with the tape on it.

Step 4: Marker Time!

Draw where you want your LEDs to go and poke holes in it. I used a screwedriver. Be very careful that you don't stab yourself.

Step 5: Time for the LEDs and Little Thing-a-majigs

Put the rubber thingies on the corners of the Altoids tin and put the LEDs in the holes. You may need to tape them in. Now you can see how the iPod package lids fit.

Step 6: Almost Done...

Now you can put the batteries in so the LEDs light up. Or, if you know mare about LEDs you can wire them up so they connect to one battery. I can't do this with these LEDs because parts of the wires are broken :\