There have been a number of Death Star fire pits floating around the internet, but this one has some extra nice detailing that makes it look awesome when set ablaze. This one came out of a high school welding class of all places.
The ultimate weapon was created by a group of welding students from Harlem High School in Machesney Park, IL, and is just about the coolest thing ever to be made in a high school shop class.
If you want to be a cool granddad, make cool stuff for your grandchildren. Mine made me a waxed Captain America shield that protected me from water balloons, thrown dirt clods, and many other projectiles, as well as a tree house, and a ton of other stuff that kids love.