I'm currently talking to 10gen, the company behind MongoDB and our previous speaker Roger Bodamer, about maybe organizing one of their one-day (or maybe even half-day) MongoDB mini-conferences in the Netherlands. They would send over multiple expert technical speakers and there would also be open slots for external speakers (i.e. you). This would be a daytime event and, depending on the number of people and the location, there might be a limited cost (0-100 euro). I was at MongoBerlin a few weeks ago and really enjoyed it. The 10gen speakers were all active MongoDB engineers and the external speakers had some good production use cases. I also met a lot of interesting people. The big question is: how many people would like to attend such a mini-conference ?