The Lawnmower Firepit
If you’re going to make a backyard firepit, you should make one using the most ridiculous materials you have on hand. Using masonry blocks is so 2010s—this person went all-out and fashioned a firepit using nothing but a dilapidated lawnmower and a huge steel tub.
Now, engineering isn’t about making the prettiest inventions, but even this one might need a fresh coat of paint at the very least. We honestly hope that the fire from the firepit wasn’t caused by a faulty combustion engine or something. It would suck if the lawnmower spontaneously blew up and sent 2×4 shrapnel in every direction.