These are snowman thumbprint ornaments! Here is Christy's description:
"Super easy to do. Just thick white paper (I put mine on wooden ovals that I picked up at [a local hobby store]), thumb prints, felt tip marker and some clear con-tact paper to cover it up with when it's done so that hopefully these will last a while. Then glued ribbon loops to the top. Wish I had thought of this when [my son]was itty bitty and I could have made one each year!"
Adding to Christy's instructions I would probably pick up a stamp ink pad if you don't already have one and try some decoupage glue on a few. Even a snowflake stamp or some stickers might be fun!
Thanks, Christy!