And, no, I don't mean cozying up to Dick Cheney.
If you want to keep drafts down in your house, then I suggest making your own draft dodgers (see picture below for those who need visual aids). Even beginning sewers can do this project.
Measure the length of the door or window you want to deploy this on and add an extra inch or two. Choose a thick fabric - something heavy like corduroy, ThermaFleece or whatever's on sale at your fabric store. You'll cut your fabric the length that you measured by 8 inches.
With right sides of the fabric facing each other, sew up one end and both sides. Turn right side out, and fill it with rice, dry corn, beans, polyfill, batting, cut up old blankets or shirts, sandbox sand, pretty much whatever you have on hand. Sew up the remaining end.
If even this project is still too much for you, you can always rustle up some tube socks, fill them with whatever you want and tie a knot at the ends. When the weather warms up, you can pour that sand back in the sandbox and wear those socks again. Or, you can cut up an old pair of thick women's tights, fill it with rice, and tie a knot at the end of the legs. Now you have two matching door stoppers.
If you want to make a very durable draft dodger, cut the legs off a pair of used jeans, fill them and sew or tie up the ends. If you don't have any long socks, tights, or jeans then head to your nearest thrift store for supplies. You'll be cozy in no time. Dick Cheney not required.
Finally, if you really don't want to spend the time on it, you can buy the one shown above at Gaiam for $20.
Doesn't this look suspiciously like the bun warmin' bed warmer? Hmmm. With a little planning you can really extend your project for multiple uses.