How to Create Calm Down Glitter Bottle

Sensory glitter bottle that can help kids or even adults to feel calm just by looking at it. It also acts as a timer to cool down. Links on Calm Down Timer Videos using the glitter bottles below:
1min - • 1 minute timer for kids
3mins - • Calm Down Timer (5 Min...
5mins - • Calm Down Timer (5 Min...
10mins - • Calm Down Timer (10 Mi...