I like mine mostly for summer outdoors so to keep them looking good I have an old fish tank I no longer use. Also one of those 1950/60s terrariums I put them in and they look good and grow all winter. I only have to water them once or twice all winter because the moisture stays in the enclosed area and they love the humidity.
If you see that your humidity trays are not working and they look like they are not going to make it. You could put the small pots in those large zip lock bags but putting sticks in the bag to hold the bag up and away from the leaves.
