Logitech product tags exist in the form of
[logitech-*] as outlined by yours truly on the Manufacturer & Company tag meta.
However there's currently an outlier, which is the Logitech Unifying Receiver, a nifty device that can sync with multiple Logitech devices. This is currently tagged unifying-receiver, because logitech-unifying-receiver was too long at 27 characters.
However, given the recent SE-wide tag length increase to 35 characters, we could rename unifying-receiver to logitech-unifying-receiver and bring it in line with the other tags.