Toys & Skill

I'll like to recommend outdoor play and just ... basically anything you can find around the house that's not dangerous? Kids don't really need toys to be entertained or to develop, that's why there are people to DIY their own or just let their creativity run wild :) I'd think that this age is the best time to expose them to many different experiences from nature, animals, environment, social issues/impact and anything they're curious about - learning first hand is better than reading from a book!