Making a jar lid from a balloon - GIF

Making a jar lid from a balloon. Perhaps not the single greatest idea for covering a food storage container, but still interesting.

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https://www.homemadetools.net/forum/...115#post120767
https://www.homemadetools.net/forum/...308#post121818
https://www.homemadetools.net/forum/...397#post116793
https://www.homemadetools.net/forum/...7968#post86544

I like it. In a pinch its brilliant.