I too love miniature doll houses, I have 3 completed, and 2 in the making. My GDD love to play with them, with supervision of course.
If you ever get a chance to go The House on The Rocks, near Spring Green, WI - an ecentric man (can't remember his name now)_ collected everything, his dollhouse collection numbers well over 200 miniature houses....you can spend hours just in the miniature area. He also has numerous collections that your hubby would like such as guns, ocean liners, knives, cars, war memobilia. It takes all day to go thru this museum, but well worth it.