a.placebetween.us takes two locations, finds the spot halfway between them as the crow flies, and plots and lists locations of venues where you can meet in Google Maps (default is coffee, but you can enter a different type of meeting location in the search box looks like it’s mainly coffee houses). So I should meet my brother for coffee in Missouri:
You can search for any kind of place: diner, thai food, bar, etc! There’s a search box on the right side of the page.