Think of a coach or a group of coaches that has helped you progress, learn and develop in this sport - and say thanks.
A card at this time of the year would mean more to that/those people than you could possibly know.
Amateur baseball coaches give a lot of their time and space to produce a program for you that’s worth saying … " I remember coach, and thank you."
Think of it this way… not only are you passing on a nice gesture, but you’re showing a potential reference that you have the maturity and the stability to think beyond yourself. Coaches, recruiters, scouts and others appreciate an individual that can be a “class act”.