Science, Technology, Engineering, Arts and Mathematics (STEAM) is what our society needs to focus on if it wants to be competitive in the future. But in order to succeed with that, it also needs to let kids discover the best career for them without any negative influence from gender stereotypes. This session presents our journey to the first Hackdays4Girls, a one day event we organized in our company to engage girls into coding in a fun and easy way. We will guide you through several hands-on activities using Scratch and the microcontroller boards Calliope and BBC Micro:bit, as well as some other ways to encourage kids to get into technology. Our aim is to let others know how easy it is to organize such an event and bring advice for those planning it.