what is?

Make him/ her clean up their own bedroom. They can do their own laundry. Take out the garbage.

When i was 15 years old, I used to repair things for my dad, usually his shoes or his thorn shirt or even offer to clean his car but of course for a fee. =) and whenever my dad no longer have works for me, I turn to my mom and offer to clean the kitchen or do some errands for her - again for a fee. they are usually generous and give bonus and extra tips. you might want to try that. In the event that your mom and dad doesn't like the idea of buying your services, convince your mom or your elder sister to have a partnership on selling lemonade or some cookies in the neighborhood. =)