Nothing racks up road trip costs like fast food 🍟. To keep our costs down, I always make road trip slider boxes. I buy rolls at Walmart and keep the basic sandwich supplies, fruit, yogurt, and juice pouches in a cooler in the car. I also keep a stash of bagged snacks and treats in a foldable crate next to the cooler.
I really like the slider sandwiches because the bread is more durable in the car and it's easy to adapt to the various appetites. My teen kids will have two or three at a time while my little kids need just one. Plus, I can mix things up and satisfy picky eaters by offering meat and cheese or pb&j along with a few side snacks.
I suppose you could fix the lunches before you go but it takes tons more room to store 8 lunches in a cooler than it does to store just the cold stuff. Plus the empty dollar-store boxes stack neatly in the foldable crate and double as a handy tool for passing out treats while we drive.
We usually have these for lunch and dinner while we're on the road and only stop for bathroom breaks. I keep a lap desk in car so I have a make-shift table that fits easily on my lap.
It's a simple trick that saves me tons of 💰 and keeps everyone full for hours. It's a win-win!