Here is a non-contact skin thermometer that lets you monitor the body temperature of kids and adults easily. It is only 5cm long and weighs 13g, so you can put it in your pocket or around your necklace. The Thermo Capsule allows you to manage the data on your smartphone.
You can use this tool to measure the body temperature as well as temperature of plastic, wood, water, glass, and baby milk. Costs under $40 at this time.