These rainbow sensory bottles are SO PRETTY and so mesmerizing! Water beads are a fantastic add in for sensory bottles and they make it super easy to make a rainbow in a bottle! Use Orbeez and a recycled water bottle to make 4 different water bead sensory bottles. These colourful calm jars are SO EASY to make, and they create beautiful reflections on the wall or table when you shine a light through them. This post contains affiliate links. If you use these links to buy something we may earn a small commission which helps us run this website. DIY