OK this is silly but I use it a lot and it helps. I use a cheap plastic cutting board under the tire to make it easy to slide into position on my epoxy floor. Sliding it under the mounted tire also lets me know I have jacked the car up high enough to remove it without having to jack further to mount the other wheel.
Yes I know they have a tool with rollers that does the same thing. But this takes little space and cost next to nothing.