And if you do not have to engage in cutting forces (time, desire or mood), you can buy ready-made decorations for the windows, in the form of special stickers. It could be snowflakes and stars, snowmen and Christmas trees, from which you can create your own fairy tale on a window pane.
Another window, you can draw a picture of a Christmas present. This will require the most ordinary gouache paints and brushes of different thicknesses. What paint depends entirely on your preferences and skills from the firs to large pictures with Santa Claus and Snow Maiden. Paint on glass is very pleasant to children, so be sure to invite them to help you. And if you are able to draw on their own is not too good, and be content with Christmas trees and stars do not want to, use the special stencils that you can buy or make yourself (eg, print and cut from the internet).
Well, what kind of New Year without snow and frost patterns on glass? If you want your windows covered with real snow patterns, you have two ways to achieve this. Firstly, you can take a tooth powder, dilute it with water until thick cream and a brush to draw patterns on the glass, and to consolidate the effect dipped in the resulting solution toothbrush and lightly sprinkle on top of the figure "snow" drop. And secondly, you can buy a "dry snow" in the can, which is very easy and simple sprayed onto glass. If you decide to stay on the "dry snow", put it through the stencils and patterns on the windows will become even more strange and magical. And at the end of the holidays snow patterns (and pictures painted colors) can be easily removed from the windows with ordinary glass cleaner.