Translation of "Nip" in Spanish

- I'm going to pop into the post office on the way home.
- I'll be popping into the post office on the way home.
- I'll pop into the post office on the way home.
- I'm going to nip into the post office on the way home.
- I'll nip into the post office on the way home.

De vuelta a casa pasaré por la oficina de correos.