Isaiah and I made a sensory bottle last night. I only had one bottle, so we just made a very simple one this time. Here’s what we did.
Our finished bottle
What you need:
Empty bottle (we used a Gatorade bottle)
Water
Glitter
Food coloring (must be water based)
We also used some stickers because we didn’t have confetti
Isaiah with his bottle full of glitter and stickers
I let Isaiah put the stickers and glitter into the bottle before adding the water. Once he was done adding glitter and stickers, I carefully poured some of the water in. With very close supervision, I allowed Isaiah to add food coloring to the water. Giving him control resulted in a really dark color, but he liked the independence of doing it himself. I added the rest of the water and glued on the lid. He’s been playing with it ever since. Next time, we’re going to try using baby oil for some of the bottles.
Excited that there's water inside
Dye mixing
Mama: Learning Along the Way 
Oh I have spare bottles at home. Got to get food colouring, but I think the glitter would look really sparkly and pretty in the water.
Make sure you put a lot of glitter in it. I don’t think we put enough.
Ok thanks for the tip! My kids would pour the whole bottle in if I let them.