1 star review by user “Tall Guys Wife” on Amazon of a rubber banana that has the words [for scale] on it.
Picture attached shows rubber banana is smaller than real banana.

Review text reads: “purchased this 'banana for scale, but it’s way smaller than an average banana. People on social media demand if you’re showing something that you use an average banana for scale. I would never deceive anyone with this ridiculous substitute for an accurate measuring tool.”