Crayola window crayons make for a perfect summer vacation gift for the kids. This will keep the kids preoccupied with all the funny things they draw all over the windows. Funny faces, their own odd creations and may be thank you messages for you, for a wonderful gift. Window crayons is a fun way to bring out the little artist in your kid. The window kit includes 5 crayons in blue, green, black, red and yellow colors. These are easy to wash-off using Clorox disinfecting wipe and the company claims that even water works just the same way.