Cumail _ cumulate..?:)
Though not technically related it seems, that's a good way to remember it! :)
I translated it incorrectly as "I am keeping okay socks," i. e. "I am keeping the socks that are of good enough quality." Would that be "Tha mi a' cumail stocainnean ceart gu leòr?"
I just think of a little doggy postman (cù + mail) that has no idea how to do his job, so just keeps the post instead XD
That is adorable! And it's unusual enough that I think it'll be quite memorable. :)