Online games that are educational in some way or spark an interest in learning more about a subject.
Sometimes we take a vacation from our normal routine when we are bored or stressed out to go to "Wikipedia Land" as my son calls it. My son chooses something to look up, sometimes just a random Wikipedia article, and we end up following links to see what interesting things we can learn just for fun.
Letting my son, who enjoys video games, to "level up" in his academic skills as far as he wants to go without expecting his physical skills to be at the same level. He gets very bored with something if he is not allowed to level up.
Reading with my son and discussing those "thought provoking books" that he loves.
Taking time to actually look up words that he hasn't heard before so he can learn their exact meaning and etymology instead of just using context clues.
Letting him work on memorizing things like scripts or lyrics or math facts while playing video games (only games that don't require any concentration).
Watching educational shows on history and science channels together and talking about them which usually leads to looking up more info online.
Reading classic books together, discussing each chapter and then going to sparknotes.com to read their analysis to see how it compares to your own.
