Things to do with my Boyfriend.?

My boyfriend and I's two year anniversary is coming up, and he wants me to plan what we do. Things that can be indoors or outdoors, (we live in ohio, the unpredictable weather capitol of the world) we have access to a lake, beach, just about anything indoors, and a little wooded in area. No or anything like that. But other than that, all suggestions are much much much appreciated! Thanks!