Fish and Chips
It's not fair to just pick one thing!
Younger brother or sister
Picture of your grandparents
Immediately grab a mop and check the sidewalk for any blood.
Recall the time you fell off your bike and how much it hurt. Then, you realize she must be in pain, so you help her.
Find her parents and explain what happened.
Offer to teach her how to ride her bike properly.
Yell for help.
Check the bike and see if there is anything that needs to be fixed.
Go fishing and sell your catches
See if your grandparents have any chores to do
Construct a worthwhile gadget to sell
Offer to clean houses
Lifeguard/Teach kids how to swim
Create a self help channel on YouTube and hope for sponsors
Offer to protect a weaker kid, like a body guard