I came across this the other day.
http://www.buylifetime.com/products/blt/pid-65048.aspx
Besides the price (yes it is expensive for what it is), any thoughts? I'm considering buying this for my sister. Her husband loves tent camping, but she never wants to go because of sleeping on the ground.
I like the concept and that you can use it for other things. You can put all your gear in there plus toys (bikes, kayak, etc).
If you were good with welding/fabrication, this would be pretty easy to make I would think. Maybe with a flat bottom and use a big Coleman tent or something.