Simply roll it through your neighbourhood and you'll gain a lot of attention.
I got the idea of the LED rollie when I was bored, and I saw this roll of solder, but without solder. I found out, that 2 AAA batteries fitted perfectly into the center of the roll.
Step 1: Parts You'll Need
To make one LED Rollie you'll need:
a Roll of solder, with no more solder on it.
Some LEDs (I used 2 5mm diffuse blue LEDs and 2 5mm diffuse green LEDs)
2 AAA batteries.
Some hookup wire.
an on/off switch (optional)
Step 2: Drill the Holes
Drill the holes for the LEDs. It might be a good idea to drill the holes a little bit smaller than the LED size, cause some "5mm" LEDs are actually 4,5mm or so.
Step 3: Insert the LEDs
OK, now it's time to mount the LEDs in the holes. Move your mouse over the yellow boxes in the pictures to view the instructions.
Step 4: Solder the LEDs Together
Solder the LEDs together. move your mouse over the yellow boxes to view instructions
Step 5: Mount the Batteries
Simply press the batteries into the center of the roll. They fit so perfectly, that they're held in place by friction.
Step 6: Solder It All Together
In this step, I will show you how to solder the LEDs, the batteries and the switch together. Move your mouse over the yellow boxes in the picture, to view instructions. I know, it's a bad idea to solder onto batteries, but i tried to tape it together and it didn't worked.
Step 7: Roll It!
If you didn't understand this Instructable, then please let me know.