I don't have any "Safe Queens" in the regal sense, but I have two guns that don't get used very often - My AR-15 and the wife's .357 snubnose. They're both good guns, but I have little occasion to shoot them. The hunting rifles (all four of them) get the most rigorous use. I have to "sight" them about 10-12 times before hunting season. When in the mood, the handguns get their workout too, although the .357 snubbie gets less love.

Oh, I guess I also have an old Taurus PT99 that rarely gets used anymore. Also not a bad gun, but when you have a Walther P99, it's hard to justify.