A full-time government employee with multiple side hustles shares his top passive income hits and flops

William Butterton has experimented with a handful of side hustles, from selling playing cards to placing ATMs. Chona Kasinger for BI William Butterton started experimenting with side hustles after having his first kid. He was looking for relatively passive hustles that would leave him enough time to spend with family. ATM placement has proven to be the most passive, while selling sports cards can be lucrative but very hands-on. William Butterton likes to tinker. "I had invention journals wh...