In my youth, I went through a series of jalopies, and learned all kinds of fixes. All my friends knew my motto: You can fix anything with duct tape and a wire coat hanger, and I always kept one of each in my trunk.
One day I was driving along with a buddy, and a hole blew out in the tailpipe of my car, making it really loud. We pulled over to a convenient store, and I bought a can of Coke, and a couple of round pipe clamps. We stood next to the car as he worried about the cost of a new exhaust system, while I drank my Coke.
When I was finished, I used a knife to cut off the ends of the can, and split it down its length. Then I crawled under the car, wrapped it around the exhaust pipe, and secured it with the pipe clamps. Good as new.
My friend was amazed that it actually worked, and cost less than $5. Even better, it was still in place when I got rid of the car about a year later.