This is an excellent way to reward good behaviour and good citizenship as well as hard work.
All you need is a book of cloakroom raffle tickets and small stationery prizes. During the week, raffle tickets are given out to children who work well or demonstrate good behaviour or manners. They keep one half of the ticket, and the other side goes in a box.
On Friday, two tickets are pulled out, and the children with the matching tickets can choose a prize from the prize box.
A great incentive, and it works wonders!