What can I make with a refrigerator box for the front yard for Halloween?

What about a tunnel? You could hang some friendly looking bats from the top, the kids could walk through it. A haunted house is also a nice idea, you'll defiantly draw people to your house. I'd say give it a clic but friendly look. Maybe some of those white round shaped ghosts with smiles on their faces. A waving skeleton hanging out a window. You seem very crafty so I'm sure whatever you choose will look great.