The main body of https://www.printables.com/model/436044-desiccant-spool-tumbler has a horizontal plane which isn't very stable if printed with zero top layers. I've converted this to a cone so it isn't considered as a top layer anymore.
Print with 4 walls, 20% lines infill and 0 bottom/top layers. I've found the lines infill of Cura with crisscrossing at different angles very good at holding the desiccant while letting air thru.
The author remixed this model.