Dave writes “I came across this site while looking for crafts to do with all the acorns my 5 year old son collected at school and filled his pockets with. In true junior maker fashion he saw the acorns and knew there was *something* we could do with them. The acorn whistle on this page takes some practice but really is quite loud once you get the hang of it.” Link.
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This also works using a bottle cap.
I’ve been using bottle caps and acorn caps for whistles ever since I saw an afternoon short about them– the kind that they used to put between cartoons and afternoon kids shows. (I believe it was channel 44 in SF.)
Speaking from experience…
If you’re thinking of showing this neat trick to a bunch of kids you’re in charge of (say, at a summer camp, where acorns are plentiful), be sure to hold off until their last day. Either that, or invest in a good pair of ear-plugs.
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