When the contents settle, seal the lid onto the bottle with super glue or hot glue gun to prevent leakage when shaken. By using different densities, the two colours are able to mix to form a new colour and then separate again. Bubbles tubes also softly vibrate, which invites users to explore touch too and helps them to be engaged whilst remaining relaxed. Secure the lid and then slowly tip the rainstick from one end to the other to hear the ‘rain’ sounds inside.

The vibrant results of these colour-changing bottles from Preschool Inspirations shows just how eye-catching they can be. I simply added a small amount of the preservative “phenoserve” and nothing icky appeared in my moisturiser for at least 2 years.Our calming, interactive, and IRiS bubble tubesare diverse and can be used in almost any environment with almost any user. Of course you could make any pattern of colours you like, but in this case the rainbow effect is really mesmerising, particular when held up to the light. For each of my discovery bottles I talk about my proportions so if you see one you want to duplicate, it should give you the proper guidance. Shake to mix and then add the gemstones, glitter, sequins, sea shells, etc and a drop or two of blue food colouring if you used clear glue.

We have a small team of people working in our office but we like to answer the phone rather than use an automated service.Aside from the sensory element, this engaging science activity is also effective for teaching the concepts of colour (for younger children) and density (for older children).

This slow motion LEGO sensory bottle from Childhood 101 is a great example – and the LEGO bricks can fall and focus, slow down or calm down, depending upon the moment. After letting the bottles dry, I fill halfway with white craft sand, some silver glitter, and shells I’ve scooped up at the beach.The best bit is that the overall purpose of a sensory bottle is entirely open to your child to determine. These vibrant oil and water discovery bottles are a safe science activity for preschoolers and older children, but will need some adult supervision.