There are all kinds of tutorials out there on how to make a sensory bottle using vegetable oil, those are OK and they do their job, however, my girls and I prefer to use another ingredient, a thicker ingredient that really slows the rise of the objects in the bottle.
Karo Corn Syrup! If you buy the 16oz bottle all you have to do is add acorns and you’re done; it even balances upside down really well.
We skipped the bling and glitter and stuck with nature’s natural beauty for these.
My youngest finds them “very entrancing,” her and I could watch them all day! I keep one by my sewing machine and find myself turning it while sewing.