I know its bad form to ask for advice then ignore it, but I had already done it before I asked!
So here are 13 moneywort stems glued into 13 ceramic thingies with holes, covered with a bit of sand. I'll post another picture in a month or so and see if they're still alive
I really like moneywort, but it seems they're always coming out of the sand and floating to the top of the aquarium. I've had enough of that