Film wrapping machine - GIF

Film wrapping machine. Not really sure what those silver/green things at the bottom are. Thin film batteries?

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Previously:

https://www.homemadetools.net/forum/...723#post197935
https://www.homemadetools.net/forum/...422#post196746
https://www.homemadetools.net/forum/...065#post191420
https://www.homemadetools.net/forum/...127#post191614
https://www.homemadetools.net/forum/...142#post126056