Kellogg-Hubbard Library - Online access to books and the "Libby" App
Play games at home: cards, Mastermind, chess, checkers, Battleship, Qwirkle, Set, and even dice. Some of these games exist in my links.
Allow students to manage some basic finances, such as grocery lists. They can work on predicting costs, counting money, and tracking costs over time.
Baking is a great way to access fractions in real-life. Fractional reasoning, and proportional reasoning are major concepts in 6th-grade math. And math is better with pie.