Insulate Your Windows With Bubble Wrap

This is a simple technique for insulating windows with bubble wrap packing material.  Bubble wrap is often used to insulate greenhouse windows in the winter, but it also seems to work fine for windows in the house.   You can use it with or without regular or insulating window shades.  It also works for windows of irregular shape, which can be difficult to find insulating shades for.
LINK:  BubbleWrap