There is really no difference in a 4 wheeler helmet and a motorcycle helmet. Helmets were invented long ago and have been in existence for over 2,000 years in some form or another. The modern helmet is just an improvement over previous versions. No one knows who invented the first helmet.
One can purchase a football helmet display case in online case selling stores that sell cases for display. In addition, one can find a football helmet display case in online stores such as Amazon or eBay.
Dr. Naismith used a peach basket with a hole in the bottom and a soccer ball, I believe, at the University of Kansas in Lawrence, Kansas. This was the start of basketball! He also invented the first football helmet by cutting a leather ball in half and wearing it as a helmet.