I overpacked, too. I brought clothes and stuff for my husband, but he was back and forth to our house several times. We only live about 10 min from hospy. Plus he could bring me whatever I wanted, which was nothing. I was sending stuff home with him.
My main things I used were iPhone/charger (served as entertainment, connection to friends, and camera), my own pajamas and toiletries for freshening up and feeling relaxed, and clothes for me and baby to wear home. Oh and our baby book; I like to work on it while baby sleeps and the memories are fresh.
One thing I wish I had thought of (not an issue if you live in a bigger city probably?) is that I labored through dinner hour, so missed hospital food service, and then restaurants in my small town were closed by the time I got to my maternity unit room, so food options were limited and I was starving. I got something via my MIL, but it wasn't very satisfying. If I had thought of it, I would have had my mom order me a big sandwich tray while I was in labor and bring it to me later.
Easy labor vibes to you, mexiflower!