Some
new merchandise has been added today in addition to the reproductions and "medals" from yesterday. They include sets of cookies, sleep masks and two baseball caps that don't look all that great to me in their preview.
Additionally, the exhibition has announced that an augmented reality experience will be possible using a smartphone app called MiloQ+. It will allow visitors to take an augmented picture with the Dragon Slayer at the entrance to mirror volume 1's cover, as well as to take selfies with Puck in parts of the expo. There will be a small photo contest in which five people will win one of the face masks that the exhibition's staff will be wearing.
It seems that some AR features may be available at home too, but the app is Japan only.