The black part at the top is an already fully functional palm driver, which is just a power hammer You hold slightly differently And you don't need to swing.

Then he created a different trigger mechanism and gave it prongs to pry nails out with.

So he just took a already working power hammer and gave it a similar silhouette to a regular hammer.

Hilarious video though.

For AWD shenanigans!

a sun hat out of some string, a pair of scissors, and a sun hat

Using only a length of pipe, some nuts and bolts, a bicycle handle grip, and a welder.