Pacifier Thermometer by Helen Zhou

Pacifier Thermometer is a soother with a built-in early-warning system. It lets you know when your baby is coming down with a fever by changing its color in stages from blue, which indicates a normal temperature, to red, which shows a fever. Infants can’t tell you how they feel, so this is an effective method to help parents find out that there is a problem before the problem becomes serious.

More about it: Behance