la cosita

Así su cosita huele a pastel.

That way, her little thing smells like cake.

— Juno (2007)

Sostén el pato frente a ti, como si fuera tu cosita.

Hold the duck in front of you, as if it were your little thing.

— No se lo digas a nadie (2006)

Cosita insignificante.

Insignificant little thing.

— Blade Runner 2049 (2017)

Pobre pequeña cosita.

Poor little thing.

— Fresas salvajes (1957)

Tom, dame esa cosita de allá, por favor.

Tom, give me that little thing over there, please.