First long trip, advice appreciated

I’ll be going on a trip from NW CT to together southern tip of FL, then in to Disney, then the great smoky mountains and back through the blue ridge mountains. Planning to stop first in Savannah, GA. Taking a 2021 Toyota Sienna (hoping to only fuel up twice before reaching the destination) with 2 adults and 2 kids. Looking for advice on what to bring to stave off boredom for the kiddos.

Already planning to have iPads with chargers, a few activity books (word searches, where’s Waldo etc) snacks, drinks, pee bottles. Also some pillows and blankets. Wondering what you all have brought to keep the younger ones occupied on these long trips.

I’m planning to leave late at night and arrive for first overnight stop in late afternoon, so it’ll be (I’m guessing) ~16-18 hours on the road. This will hopefully be the longest stint of driving of the trip.

TIA