Coolest Products from the 2011 Coolest College Start-up List

Courtesy Company
5 of 5

A tween trend gets literary.

Miss O & Friends books
When Juliette Brindak was a kid, she liked to draw "cool girls" to amuse her little sister, Olivia (a.k.a. Miss O). Now, her style of illustration is used all over her website, MissOandFriends.com, which is über-popular with tweens. It's also spawned this set of books for girls aged 8 to 14, which include stories about boys, bands, sisters, and an adventure to Italy, mostly written by an author who worked on book spin-offs of the '90s TV series Full House. They're sold online for less than $10 each.
—Christine Lagorio