Inventor Ninja : Grow Grit Press : 9781951056018 : 1951056019 : 21 Aug 2020 : Inventor Ninja stumbles open a creativity block. Find out what happens in this comedic book about creativity. Life is tough. It's even tougher for children who are just trying to figure things out. The new children's book series, Ninja Life Hacks, was developed to help children learn valuable life skills. Fun, pint-size characters in comedic books easy enough for young readers, yet witty enough for adults. The Ninja Life Hacks book series is geared to kids 4-10; a perfect children's book for boys, girls, early readers, primary school students, toddlers, or any child who likes to tinker, create, and invent things. Excellent resource for counselors, parents, and teachers alike. Collect all the Ninja Life Hacks books and sets!