I think most guys pull that trick....
I don't have a wife but when I was younger I'd do that sort of thing all the time. Until my tool collection started getting too big it was working telling my parent's that I had tools for a long time.
Never did find a good way to hide a truck though. Tried parking a couple over a family friend's place (he has his own collection of Ford trucks) but that didn't work all that well. See, the family friend has all fullsize Ford trucks, a pair of Bronco IIs and pile of parts sitting together just didn't fit in and there were immediate suspicions.
I think if I get married someday, I'll have to make sure I get the wife properly broken in so I don't have to deal with it, lol. Or just keep bringing stuff home till she gives up, lol.