Doesn't take long to add up. Family of 4 - every phone, including prior generation which might be off in a draw: 3-8
Router, and extenders (multi floor house): 1-4
Chromecast|Sonos|Apple speaker/Chromecast|google|firestick|roku|apple TV/smart speaker/hifi receiver/eaves dropping devices: 2-10
Smart doorbell/light switch/temperature sensor/weather station/co2|co detector/flood detector/bulb/led strip/led light/nanoleaf/garage door: 4-16
Some cars: 0-2
Some smart watches speak wifi: 0-4
Computers.. maybe the desktops are wired (likely still support wifi), all laptops, chromebooks, and tablets : 3-8
All game consoles, many TVs, some computer monitors: 3-8
Some smart appliances: 0-4 (based on recent news of ads, best to aim for 0)