we don't want you to get a plant offense lol. I need to research about sending plants in the mail.I would send you some, but that would make it probably a weirdly strong offense if I got caught since it's through the mail, which is a federal service? I don't actually know.
But you could get pothos today at any plant store. You can take the clippings, leave off the dirt part, and just chuck them in the sump. Or you could research a bit more on this forum and how others use it.
Or there's the pennywort to try. I'm sure duckweed would thrive in any conditions but they are so small....