The one thing that I miss the most in our truck shop where we maintain our over the road trucks is not having some D rings in the floor. We made our last addition about 25 years ago and I had D rings in the back of my pickup and forgot to have them put in. I'm talking about the D rings like alignment shops have for bending axles. I even had some 6" square man hole things made to cover them with a plate when they were not in use. It is so often we would like to bend something by chaining to the floor and putting a bottle jack under it.