Thermometers! So random. We panic ordered these the night we got home because I was having hot flashes and couldn’t tell if the room was boiling or if it was just me. Baby’s optimal temp is 2°+ or - 70° and these are all over our apartment so I know if it’s too cold or hot bc I can’t trust myself anymore! So random but so helpful! LTKbump LTKbaby LTKfamily