I made these sensory bottles for my son.
I bought Glaceau Smart Water bottle from Asda and drank the water from them.
Then I washed them out thoroughly, I peeled the labels off and there was a sticky residue left so I cleaned that off using hot water, Cif and a scourer which got rid of it all.
Then I filled them with things such as beads and sequins.
My son loves them
And Pom poms and Feathers