ついに「けいおん!澪」のおっぱいが揉み放題に (NSFW)
Not sure if this has been mentioned yet but...
For 3780 yen, this is one of those oppai mousepads featuring Akiyama Mio, one of the two most popular K-ON! characters. I have no idea why anybody would need a mousepad to begin with as that it is unnecessary but perhaps, that only applies to people using optical mice.