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
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
Step 3: Insert the LEDs
Step 4: Solder the LEDs Together
Step 5: Mount the Batteries
Step 6: Solder It All Together
Step 7: Roll It!
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