You can order a box of books from this site for $12.99. They will range from toddler to young adult books. Each box contains approximately 150 books (give or take). You can also order more age/grade specific books, but it costs a bit more. There is now an advisory on their site that due to high demand, boxes may not ship for up to 5 weeks, but for $12.99, thats a small price to pay :)
Toddlers will love the idea of shape hopping, care giver would call out the shape and color and the child's job is to find the shape and matching color. Great for large motor development and body and eye coordinations.
DIY Portable LEGO Kit with 24 Free Printable Activity Cards. A great idea for those times where you have to wait (Doctor's office, restaurant) or when you are traveling (great in the car or on a plane)! From Fun at Home with Kids