What is the best way to send a golf ball through the mail?

I need to send a good friend a lucky golf ball for him. To maybe help him feel better about this cancer. I am wondering what kind of mail should i use. a padded envelope or a cheaper method?What is the best way to send a golf ball through the mail?I would definitely go with the padded envelope. I can't believe you even considered cheaping out on your friend who has cancer.