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.
In December 2017, there were "talking" USB memory for Kaijuu Girls on sale.
The memory was 8GB, and the voices were by
Iida Riho,
Suzuki Aina, and
Endou Yurika.