Covered Bridge Potato Chips is a local crisp maker outside Hartland, tied to the potato fields of the Saint John River Valley. When tours are operating, the self-guided route shows the process from potatoes to fresh chips; at other times the gift shop is still a light, local stop.
Check current hours before driving out. This is not a major attraction, but it fits Hartland well: bridge, river, potatoes, and a snack for the road.