This tree that has lost all it's leaves and is lightly covered in snow has the corresponding version in each season for you to download as well as more trees here.
This one is quite large and very beautiful, you could turn it into a custom greeting card with your favorite image editor! There's more snowmen clip art here.
This beautiful winter nighttime scene is available as a large png and a vector file, so it could be nice to make your own Christmas or other winter seasonal greeting cards!
This blank sign covered in snow could easily be customized with your own text in your favorite image editor for a personal touch!
One of my favorites winter time activities snow sledding! Sliding down those icy slopes at top speed is so much fun for kids and adults!
This image of a little girl with a snowboard, winter coat, scarf, mittens and goggles is both very high quality and super adorable!
Here's another, small cartoon of a Snowboarder, this guy is in action down the hill and has almost lost his beanie (or toque).
Ever feel like it's so cold even the thermometer is frozen? Well here you go, this thermometer is wearing earmuffs and a scarf and is still feeling the brutal winter weather!
Here's a very simple, almost childlike drawing of a kid dressed in a winter coat and mitts while the snow lightly falls.
This poor guy looks totally frozen. I grew up in Canada so I know how it feels to have an icicle forming on your nose even when dressed as warm as possible against the winter storms... it's much better as a cartoon ;)
A large snowflake that you can resize (it's available as a vector graphic) and use to decorate winter webpages, greeting cards or crafts like in scrapbooking.