If I hear that, I’m dropping my shit where I stand and going to the grocery store down the street.

Why not use the 2-3 seconds to put your item in the bag? Solves your conveyor problem and your waiting problem.

I agree on the knee pad, but most of these seem a bit overkill. I’d go with a sleeve like this or a more lightweight knee pad like this.

I had to do the same with chrome. The past week was not enough, so I had to choose to clear all time.