What you'll need:
A glass vase
Rubber bands of various sizes
Craft spray that "etches" the glass
What you'll do:
1. Wrap the rubber bands around the glass where you want the stripes
2. Spray with the craft spray
3. Allow the spray to dry then take the rubber bands off
4. Go out to your flower garden, pick some flowers, and enjoy!
Have fun and just a hint, don't drop the glass, not a good idea...