and that, strangely, brings me to lewis carroll, author of "alice in wonderland." almost 150 years ago, he wrote what's called "nonsense verse." surprisingly, some of it seems to be coming true. pigs still don't fly, but our seas are warming up. and that's not nonsense. to take very seriously. >> learning how to create things with balloons is a great skill to have. it's also a great way for a teen to make some extra money. sandi masori, america's top balloon expert and author of "the diy balloon hat bible," shows us how. so, you've said that a great place for a teen to set up to sell balloons is in a public place, like a park. what do you think is the best sculpture to make there? >> i, personally, love hats. hats are so visual, so colorful, and they become a walking advertisement. >> right. >> and the thing is -- being an entrepreneur is not just having the skills to make money, but also knowing it's a little bit of marketing -- knowing where to go. right, so, a park is a great place, and how do you know if the park is gonna be busy i mean -- one, if you've got a