Loo Bear was keen to try an experiment he'd read about in a library book...
A jar with a little water and vinegar in it. A glove, with bicarb soda in the fingers, secured to the rim of the jar with a rubber band.
Lift one finger to let the bicarb fall into the jar and... a spooky hand that rises up all by itself! Our rubber band wasn't particularly tight so a lot of the air escaped and the hand quickly deflated.
Take 2: We tightened up the rubber band and the hand stayed inflated for a good half hour.
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"Everybody is a genius. But, if you judge a fish by its ability to climb a tree, it will spend its whole life believing that it is stupid."