Ixnay on the concussion grenades, someone could get hurt
Most of the other features were considered and (for now)rejected due to budgetary limitations. Anything that didn't need to be built into the core of the house was cut -- almost every penny went into things that would be impractical or too expensive to add later.
I was *really* close to including a tunnel in the initial foundation pour, but (a) the builder was already kinda freaked out by the more normal things I wanted, (b) the weather was rapidly approaching the point where it would be too cold for the footings and foundation to cure properly, (c) I was not able to quickly find a mechanical engineer who would sign off on a tunnel running under where I wanted to park the car.
The tunnel was going to go to an future underground pistol range, with a storage building / workshop built on top. Nobody seemed to think the underground range was odd and a number of people allowed as how they always thought that would be a great addition to a house.
I figured as long as it was long and narrow I could always redecorate it as a bowling alley when I went to sell.
By the way, I'm in serious need of decorating ideas for the vault / gun room. I have seen some very neat rooms in various movies over the years, but the only example I can find now is the one in "Mr. and Mrs. Smith", which is kind of stark even for my tastes.
Any suggestions or screen captures would be greatly appreciated.
>>John, we need to talk. You're scaring me
Mike, by Alaskan standards I think I still qualify as "unarmed"