kogemashita takoyaki thighhighs

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is this some everyday activity when it's snowy in Japan? I have no idea what she's holding or what she is doing. She is, of course, adorable, but I lack context.
Poring oil into the oil tank of the compact sized oil stove using the 石油燃焼器具用注油ポンプ (don't know how to say it in English)
gas burner filler pump?
"Hand pump" will do I think. The actual google term being "hand pump siphon".