Which kids’ gumball machine is best? Gumball machines are fun, affordable ways to add a bit of color and nostalgia to your home. Simply drop in a coin, turn the knob and out comes a delicious gumball.

We're used to vending machines plunking out a soda, a bag of chips or a favorite candy bar. But what about dispensing a new book? That's the novel approach about a half-dozen Des Moines Public Schools ...