Reading chains: Every time a student finishes a book, they can write their name, title and author of the book on a strip and attach it to their class chain. Perhaps the class with the longest chain at the end of the year could get some type of reward.
Art Projects for Kids: Snowflake Art Trading Cards. Punched snowflakes glued to painted watercolor paper. Love these - even little kids could do a series of these in diff winter/Christmas themes, and could gift them to mum and dad as gift tags:)