Congratulations Mark!
One's first job is soooooo exciting, and it sounds like yours is a good one! You're very wise to put half into savings. Since my kids were born, anytime they got a gift of money, I've always put 1/2 of it into their college savings account. It was a way of life here, and they knew that, when they were old enough to realize that they were being giving cash for a gift.
Brian, now almost 24, now knows how to save money, instead of spending it all right away when he gets a paycheck. That's how he managed to buy himself a car after only working at his current job for 7 months.
I can't wait to hear what you do decide to spend your money on, once you start getting paid. The first thing I saved up for when I was babysitting as a teen, was my very own phone for my bedroom. We had 2 phone lines, so it was pretty expensive, but I was OH-SO-Proud of myself when I had enough to get the phone!