Do-it-yourself storm windows keep the cold air out

The biggest leak of cold air into your rig this winter will be from your windows. Replacing your windows with double-panes is expensive--and impractical.

Instead heat-shrinkable plastic film and double-sided tape (sold as Window Insulation Kits in home supply stores) will do a pretty good job.

Stick the tape to the metal frame around the window and cut the plastic film so that it fits completely over the tape on all four sides.

Use a hair dryer or electric heater to shrink the film, taking out the wrinkles, then trim the excess film. Presto! Instant storm windows.