@Lurwah from Hack42 wrote in to share a cool thing happening in the Netherlands this weekend: six Dutch hackerspaces will be holding simultaneous open houses.
This Saturday, 31st of March, Dutch hackerspaces will open their doors. We invite all those who are interested to come take a look at what hackers really are and do. Of course, we expect visitors to participate as well. Each hackerspace has prepared quite a lot of fun activities, everything from LED-throwies and mini-arduino-workshops to security lectures.