If you are looking for an opportunity to beautiful your church grounds for spring while also providing a fun activity for your teenagers, try this one.
Purchase some inexpensive flower pots (small), some fast-growing flower seeds and some potting soil. Create these potted flowers, ready for watering, by using an assembly line or at individual table. These can be placed outside the church once they have grown or planted in a flower bed.
As an option, you also could use these flower pots as a simple but effective fundraiser.