I get a 20ft tow chain from home depot and cut it in half. They are about 35$. The houses are the 2 room kind. The barrel of water is only for playing in. The water bowl is about a 1/3 of a bag of concrete. The shade board is a full sheet with 2X4's on each side for strength. Each set up is a little expensive but I really like them. As long as you have good keepers then they will last you a considerable while. If you have some Knuckle heads then I would clearly not spend this kinda cash on the setup.
I have some of Jacks houses on the other side of the yard. Will try and take some picks later.
Chain::: 17.50
House:: 75.00
hardware 30.00
shade board 25.00
bowl 10.00
about 150 apiece but I think well worth it.
Digging it down 1 foot and screwing a 2X4 across the bottom so they cant kick it out. The location is a old gravel pit so the ground is near perfect. It is 16X12X6 and is 9 gauge wire.