concrete

"I've got the most brilliant idea! Instead of people driving on wheels, why don't we just make the roads themselves out of tires! Brilliant!"

Almost as dangerous as the stairs of Khazad-dum. ~Not-So-Handy Andy

Uh oh, here comes the foreman to check out your work. ~Not-So-Handy Andy

Instead of actually filling the potholes, just throw a bag of powdered concrete in there! Genius!

From the submitter:

"Had some left over bricks and needed a seat to contemplate my next project."

Consider construction contemplation complete!

And by "tools of the trade," I mean these guys' supervisors.