Notion (accessory)

Notion is like a little button that you put on things to make them smarter. When you put the button on something like a water bottle or a backpack, it can know things and tell you things. For example, if you put the button on your water bottle, it can tell you how much water you have left in the bottle. Or if you put the button on your backpack, it can tell you if you forgot something important like your keys inside. It's like having a little helper that can remember things for you!