Most rewards involving money are private. Monetary rewards are most effective when infrequent, because when they are expected they are no longer perceived as rewards. Based on the project structure and the authority of the project leader, some of these are:
Recommendations for salary increases
Financial rewards such as bonuses or stock options
Gift certificates, allowances for meals, tickets to an event, or other individual rewards that cost money
Where programs for such recognition exist, take full advantage of them.