o negocinho

little thing, thingy

negoc business + inho diminutive; small or endearing
noun · masculine singular Rare #42,048
little thing, thingy Informal diminutive of “negócio”; often used for a small object whose name is unknown or unimportant.
PO: Onde está aquele negocinho que abre a garrafa?
EN: Where is that little thingy that opens the bottle?

Sei o que negocinho é.

I know what that little thing is.

— Juno (2007)

Definitivamente queremos que tenha negocinho, por favor.

We definitely want it to have that little something, please.

— Juno (2007)

Eu tenho um negocinho aqui que a Sandra mandou.

I have a little something here that Sandra sent.

— Que Horas Ela Volta? (2015)

Negocinho?

A little something?

— Juno (2007)