Beadboard ceiling - to cover the ugly popcorn ceiling. Only trouble is: very tall vaulted ceiling might be more difficult. I actually like this idea, but don't know how well it would work in my house. I have UGLY ceiling tiles.
Beadboard ceiling in kitchen/eat in? For a traditional farmhouse look, try V-bead (far left) or V-bead (top). Wider "boards" tend to look less busy in a large space. There are also custom styles, like casual, random-width V-bead (near left).
31 Elegant Traditional Living Room Designs For Everyday Enjoyment