Banana! And it glows in the dark!
TIL that Banana Equivalent Dose (BED) is a thing. A little bit like “weight in elephants”, but for ionising radiation. https://en.m.wikipedia.org/wiki/Banana_equivalent_dose
Based on pattern from Lindsey Roe and Off the Beaten Hook https://offthebeatenhook.com/banana-free-crochet-pattern/