Make goody bags and put them under 7 mailboxes or leave by the front door. Or just give it to the first 7 people you see.
Give thank you cards to your teacher(s) and/or bus driver(s), You can include a treat.
Buy some flowers and hand them out at a senior citizen’s club or nursing home. Visit the residents.
Pay for someone’s gas at the gas station
Put encouraging notes on 5 cars in a public parking lot