Rebecca keeps herself busy; she's not "in the way" of the work of the higher grades. She has an hour of "Sesame Street", and enjoys looking at books, working puzzles, and coloring/painting (It amazes me how she fills the WHOLE PAGE with color!). Although she's fairly independent, Becca will happily play games or work with anyone who makes time for her.
I've read over the years about preschool activity bags, and finally made a few. The idea is to fill a large (easy) zipper bag with one specific activity. Train your toddler, and the bag becomes a fun, independent, and educational project. There are ideas all over the internet, but here is a link to one idea-filled page. It includes links to more ideas.
I had some traditional sewing cards, but the holes were too small for Rebecca, so I made simpler ones with thin cardboard and a hole punch.
This plastic needle is so thick that Becca can't really pull it through the plastic canvas herself. Maybe next year...
Here's what a single project bag looks like: easy zipper, see-through bag, all the supplies ready to go.