Thanks a lot for the great tips (and the acorns

), I'll head to the cactus forum then :)
I keep the Polka Dot Plant in my room, which has a large west- and a large north-facing window, so it should get a decent amount of indirect sunlight throughout most of the day :)
I read that for some plants that like high humidity, it's also good to keep the pot above a saucer filled with stones and water. Would you recommend that for the Polka Dot Plant? And should I spray the leaves with water from time to time? The air humidity in my room is usually at around 50%