Indeed. I have 4 of the little beasties
They can indeed become addictive.
When a new model is launched I just can't resist.
Used to use my oldest RPi 1B on DSLStats but using Webserver data uploading max'ed out the CPU so now utilise the 3B for this, the old 1B has retired.
I still use 2 RPi ZW's remotely on my son's and daughter's VDSL-2 lines but without Webserver data uploading, work perfectly and I can keep an eye on their lines using VNC.
These may soon become redundant too as both their areas have recently become FTTP enabled.
Very interesting on your Logitech Harmony, soundbar adaption, there's always a project out there somewhere, just a matter of finding it.