I spent three days at MGC in Milwaukee for the first time in six years. They've improved a lot since then (when it was run at a hotel and the entire vendor area was under tents outside...now it's at the Wisconsin Center across three entire floors). Here are a few highlights.
I was one of 30 participants in a Ben Heck workshop to piece together a micro handheld that he designed. Pretty cool little piece of tech and an exercise in surface mount soldering. It is powered by an ATTINY1616 chipset (16/20MHz with 2KB RAM, 16KB programmable flash memory) and a 128x64 dot OLED display. Ben programmed a cool Moon Patrol clone (open source) that runs very well. You can see a video preview of the one I assembled, here.