Hi I was in Akihabara yesterday and I took this pic which was on the wall of an isle around the station. There is a pharmaceutical company called ROHTO, and it's now selling an eye-drop "digieye" in collaboration with Hatsune Miku.
What's funny about this eye-drop is that if you read the URL of this merchandise via your smartphone and put it over the package of the eyedrop you can see Miku dancing and singing through the camera of your smartphone. Below is a video of how it works.
How did you guys spend your summer vacation? Hope it was fun.