Good suggestions. If he's a pitcher without J-Bands, those are a must!
I know my RHP son cannot get enough 3/4 sleeve length shirts, dry fit shirts, and shorts. Before his senior year, my son HAD to have a new glove for his senior year. I can't remember if my parents got it for his December birthday or Christmas, but it was just one short year later that his college offered gloves half off... and he HAS to have a new one because it has the college logo. *facepalm*