S.M.
Try to go outside for as long as you feel comfortable each day, it will break up the day and make it go a lot faster. As for indoor activities, kids love to think that they are helping with "grown up" chores. Get some pre-made cookie dough and let him smush it onto a pan & put sprinkles on. (Also a good time to teach him how to use the dustbuster.) Edible play dough is also fun. Let him play in the laundry and help you put clothes away. My son has never been good at matching up socks or folding anything, but he knows which clothes belong to daddy, mommy, & himself, and will carry each piece of clothing one by one to the correct room. Great way to wear him out!
Best of luck - and have fun!