Teamwork Motivation Question:

If you offer no recognition for a job well done by your team members, the likely scenario is that the next time they will not do their jobs as expected. Why? Because if their good performance is not appreciated, they will think; Why bother? No one appreciates it anyway.
However, don't limit yourself to positive feedback's only. If they fail to achieve something, conduct a lesson learned procedure.
As for incentives, feeling that you belong is an incentive too. Remember that other employees and teams in the company watch your team performance and people would want to learn from/join the success.
You may present a clear result for high level of performance in order to drive team motivation.
Financial reward is not always the best answer for motivating a team. Bonuses are not necessarily motivators as you have to think of the next tasks - they would expect nothing less than these incentives. A simple thank you or a small reward is more than enough.