Podcasts and Music
Saved the most obvious choice for first! Podcasts and music are the lifeblood of a long road trip. These are essential if you’re looking for a cheap to free way to liven up any long drive. Make sure to download some ahead of time. You never know when you’ll run into an area with no service! Extra points if you play a movie soundtrack and envision your road trip as a cinematic experience.
Take Pictures
Whether you stop the car to do this or keep it moving is up to you. Pictures are a great way to stay engaged on long rides. Grab a disposable camera or two, and you’ll be able to re-live everything when you see the photos after you get home.
Get the Energy Out
This applies to adults as well as it does to children (and animals, for that matter). Want to pacify your passengers? A morning walk or run in a nearby park will pre-emptively get the energy out. Enough exertion and maybe they’ll even get some sleep. Sleep is the simplest way to make a road trip fly by, after all.