Last year, I made some KABOOM Cakelettes with Pop Rocks inside. So this year, I adapted the idea into candy bottle rockets. Just fill some straws with Pop Rocks, stack some patriotic-colored Life Savers (hard & gummy), and top them off with cone-shaped Airhead candies. You'll have an interactive & edible centerpiece with plenty of TNT for your tastebuds.
The easy how-to is available at SheKnows.