Last summer I spent a lot of time trying to decide on a better way to control my furnace. I wanted to be able to turn it off without going to the basement or the living room on a day like today, when it was in the
60's all night and will stay at 65 to 68 all day long, and to turn off the AC on a day when it will be no more than 80 all day long.I looked into wireless themostats. I could keep it by my bed, atlhough they are as big as 2 decks of cards. Or ones that are controlled by a cellphone. For that, I could use my cellphone or even, I think, my previous cell phone with no SIM card since it could just use the wifi iirc. Of course I'd still have to keep that phone charged and I'd have to wait when I turned it on, and the control unit at the other end costs money.
All choices looked inconvenient at best and not worth the money.
Finally it dawned on me, and I just interrupted the thermostat connection at the furnace, ran a wire from the furnace up the laundry chute and mounted a mini-toggle-switch on the metal panel that surrounds the chute's opening in the 2nd floor hall. Works perfectly and would have cost only $4 except I already had the wire, the switch, and the wire-nuts.