My wife has killed me several times already. In addition to using money orders or cash only, I do this. A few weeks in advance to something I want to acquire, I say in a conversation (fill in the blanks as necassary):
"I talked to _______ today, he just picked up a ____________. He said I should come by and try it out, or take it and try it out when I can." Ends up being stored indiffinitely by me.
or
"__________ asked if I could store this for awhile."
or
"Yeah, one of the guys asked me if I want to trade _______ for his ________."
And sometimes I end up storing things at a friend's house (like a vehicle or two).

Actually one friend of mine,who isn't married, has 5 acres and he stores 16 vehicles for an assortment of us married buddies. That's a real pal!
Realistically, my wife is 5'4". I really shouldn't be scared of her, but she can really go nuts way out of proportion to her size.
