To decorate your old sled for Christmas, you can try adding some Christmas-themed decorations to it. Some ideas include:
1. Add Christmas lights along the edges of the sled and in the middle of it.
2. Put some Christmas ornaments on the sled, such as a Santa Claus figurine or a Christmas tree.
3. Add some greenery or pine branches to the sled to give it a Christmas-y feel.
4. Put a red and green plaid blanket on the seat of the sled.
5. Put some Christmas stickers or decals on the sled to give it a festive look.