Okay, so this one is probably better categorized as a candy than a cookie, but they look good on any cookie tray! This is another one I remember making as a kid with my mom, and it doesn't require any baking.
All you need is a package of almond bark (chocolate and/or vanilla), and some toppings (m&m's, sprinkles, nuts, pretzels, etc).
Break up the almond bark into pieces and melt it in the microwave per package directions.
You can do this with white chocolate or vanilla bark as well. Then maybe you could pretend they are snow blobs.
Once they are decorated, just let them cool and harden on the counter...they don't take long. If you really want them done FAST, just slip them in the frig for a few minutes, and then peel off of the wax paper and enjoy!