Product: Wallpaper
Color Changing Wallpaper   (+4)  [vote for, against]
Heat sensitive ink shows different patterns with different thermostat settings.

Perhaps at night when the thermostat is set below 65 as it is in my house, it turns black with stars. Then when the heat goes above 72 it's happy beach scenes. Above 75 it's a desert with daddy standing there with his pockets turned inside out looking up into an empty wallet.

If having this on the walls was a bit much, just having a white celing that turned to black with stars at night, maybe even with clouds and moonscapes would be something that I'd probably buy.

Not sure if there's a need for it but you could also have this around vents to visually indicate warm air was coming out. Hvae it turn red or white in the area that's headed by the diffusers.
-- doctorremulac3, Mar 04 2019

Like those coffe mugs. https://www.amazon....?ref_=fsclp_pl_dp_4
[doctorremulac3, Mar 04 2019]

Probably have something more like this. https://www.amazon....?ref_=fsclp_pl_dp_5
[doctorremulac3, Mar 04 2019]

Ok, white ceiling turns black with stars and constellations. https://www.amazon....TYDD6ZEG5CXXMKQEXC6
For a kid's room, are you kidding me? I'd totally buy this! [doctorremulac3, Mar 04 2019]

random, halfbakery