Decorating the windows is a fun way to play indoors during the winter, especially when the weather just isn't cooperating.
While it was snowing outside, the kids and I made Wikki Stix rainbow snowflakes for inside. It's so simple and easy yet, quite satisfying for the kids and also gets those fine motor muscles working. They do leave a bit of residue when you remove them, but it cleaned up very easily with a little window spray. (Note: affiliate links below)
All you need are Wiki Sticks!
Alternatively, you can also make snowflake window clings.
You don't have to tell me, I know you're jealous of our view.