Let's see if we can give ourselves some kind of metal poisoning!
Step 1: What You Need
An Altoid Tin
A screw or nail
Hammer Of Thor
Step 2: What to Do
It's obvious. Make a s@$! load of holes in the tin with the hammer and nail or screw.
Step 3: Use
Add this to your grill, either gas or charcoal. Put it in beside or on the coals, or put it on or by the burners. I used the magnets hold it in place.
You'll probably want to burn off the paint before use.
And do it at your own risk of metal/paint poisoning!