30. And I live alone.
I hadn't thought of home automation/control devices. I've only got 4 "smart" plugs/switches, but they aren't included in the 16 I quoted because I've got them connected to the HH3000 as I found it easier to initialize them from a dedicated 2.4 with my phone connected to the same SSID.
Based on that.... I guess I've got 20 + 2 more hidden wireless STBs.