This SnapShots in Akiba site
has some anime, game, or seiyuu related snapshots
taken while walking around in the Akihabara area.
Comments to snapshots@usagi.org.
Between August 10 and August 12, 2018, there was a Bang Dream Girls Band Party
event in Akihabara.
There was a stamp rally, and those who completed it received a
small clear file.
There were also some Bang Dream advertisement trucks running around Akihabara
on those days.