I saw this idea at a craft fair a couple of months ago. I think it would be a great party favor, and it's cheap!
What you need
Battery powered tea light (dollar stores usually have them in a 2 pack)
scrapbook paper to coordinate with flowers
Cut a strip of paper to fit around base of tea light.
Glue paper around base of tea light. If it's not exactly the right size, you can trim it, but the flowers will hide imperfections.
Take apart your flowers.
Cut a small slit in the bottom of the petal. It doesn't have to be big- just enough to slip over the bulb.
Slip petal over bulb. I found it worked better to put some of the petals upside down, but it will depend on your flowers.
Add more petals, until it's as full as you like it.
The best thing is, that with the exception of the tea lights, you can use your leftover craft materials.
Hope you enjoyed this!