What is something that bạn think should be invented/created?

Gumball machines that dispense ammunition.
Like, imagine going to the mall, putting some quarters in a machine, and getting a hand full of .22 LR.

Something that does not cost much, but can clear the driveway (and pathway) of snow easier that a shovel - hoặc better yet to prevent the snow from falling on the driveway and pathways. (I know there are snow blowers and other costly machinery, but I am looking for something low cost and effective.).

They should invent a something that keeps computers temperatures from going over 30 degrees Celsius. It would be nice to not have to worry about my CPU melting.