Future, they’ll blow up a balloon and tape it into the straw. Instead of tying it shut, they’ll pinch it closed which has a clothespin. Now they’re able to launch! They will just remove the clothespin and watch their rockets just take off! Have them attract patriotic styles for example https://www.quora.com/profile/Eurokids-Bhadohi/Celebrating-Independence-Day-with-Pride-at-EuroKids-Bhadohi-Introduction-to-a-Significant-Celebration-Every-year-as-t