You'll get chapstick, sunscreen and moisturizer in the big kit you get on I-day. Unless you have allergies, you don't need anything. Have your parents send your favorite brands in care packages.
You can have electric toothbrush after Plebe summer. Right as you finish Plebe summer, you'll ask parents for what you need: Noise cancelling headphones, watches, wireless earbuds, sunglasses, electric toothbrushes--all come flooding in from parents all over the country. Since the $$ total for that package can be pretty high, many parents opted to ship to the sponsor rather than risk the black hole that was USNA PO COVID year.