Just in case you're doing stuff for the holidays, who knows what it may be, here are a few tips just in case these are one of the things you're doing.

Driving somewhere chilly?
If you find that your key won't fit into a frozen lock, stick the key into the snow for a couple of minutes. The metal will usually contract enough to allow you to unlock your car door or whatever lock.

Capturing some memorable moments over the holidays?
Disposable flash cameras usually contain two AA batteries which are used for the flash. When the camera's film is used up, the batteries are still pretty new. Since the film winds in to the spool in these cameras, it's safe to break open the camera, take just the film to the lab (it's just a normal roll of film) and use the batteries for your walkman or flashlight.

Trying to ward of the holiday drunks?
If someone sends back a drink complaining you shorted them on liquor and you know they are just trying to get more booze for free, add a drop or two of the liquor into the straw or on the rim of the glass. The first thing they taste is the alcohol, which will shut them right up.

Being a holiday drunk?
Shaking a little salt on your napkin or coaster will prevent it from sticking to the bottom of your glass.

Gift Wrapping?
There is a better way to remove a price tag from a gift than trying to peel it off with your fingernail. Place a piece of tape over the sticker and rub it with your finger, leaving an end to pull on. Then rip the tape off like you would a band-aid, and the price tag will go with it.

Singing?
If you're singing in a mid-sized choir and you suddenly forget the lyrics, just mouth the word "watermelon" over and over, in time with the music, until you remember them again. The audience won't be able to tell the difference.

Candle Spilling?
A very easy and practical way to remove wax spilled onto material is to first scrape the excess wax off of the material (a credit card works nicely), put butcher paper or newspaper over the spill, and place a warm iron on the paper. The wax should melt and transfer to the paper. This also works well for carpet and some upholstery.