Honest answer: Gardening. It's only as time consuming as you want it to be and it's very rewarding. Start by planting some easy to grow plants like beans. There is something so satisfying about making your own food and watching the thing grow bigger every day.
Change the waterpump in my car. You may as well change all the belts too seeing as you have to remove them all to get to the water pump anyway. I have all the parts