I 44 Road Trip

My husband and I will be going on a road trip the week of 4th of July 2018. Pat of our road trip will be on I 44 going from St. Louis to Eureka Springs AR. We already know of a few things we want to do like Visit Lambert's restaurant (where they throw rolls at you) and visit Redmons Candy Factory. We don't have time to do the caves unfortunately and both of us have been to Mammoth Caves so we don't necessarily need to see a cave. Just wondering if anyone has any suggestions for other things to stop and see along our I 44 portion of our trip?