Buffalo Billfold Company - Bison Leather Baseball Kit - A super Parent/Grandparent/Child project for right now!
Bison leather cover that you stitch yourself. Needle and nylon thread included. A great way to add to the ways to keep kids (and you) busy during these times .... and you end up with a very usable ball.
It takes a bit of time, and some attention to the stitch detail, but you don't have to do it all in one sitting. Start; take some time away and come back to it. As it progresses, you can start to see how it will become a usable (but not really a bat-able) baseball. Still fun and educational.