padlox
Big clunky things you use to lock your fish in, or your enemies out, depending on the day.
I used my padlox to lock my fish in, and it was like a fishy jail break movie.
The padlox was so loud when I shut it, my fish got a fishy fright.
I used my padlox to lock my fish in, and it was like a fishy game of hide and seek.