If your child suggests something that can't be done right away, reinforce the suggestion instead of disregarding it. You're usually so good at thinking of things to do. Reinforcing a child's sense of competence to generate activities will help him develop a sense of resourcefulness. If your child can't think of anything to do, even with your encouragement, it's okay to start making suggestions. I sure could use some help for a while.
Most young children like to help with household tasks.
If you're cooking, sewing, or cleaning, find small jobs that your child can do with you. Even older kids can get into helping, especially if they feel like they're accomplishing something. Sorting through family photos is a great activity for children. They love seeing pictures of themselves when they were younger, and are often interested in seeing younger versions of family members. If possible, get a blank picture album for them to fill with pictures.