I'm looking at silicone molds and it's hilarious what shapes you could make soap if you wanted to
like you could make a gingerbread house out of soap https://www.amazon.com/gp/aw/d/B09LHBS4CG/
how about a jar with a lid https://www.amazon.com/gp/aw/d/B099D8RHQC/
(this gives me cursed ideas)
very impractical for soap but a good gift for a kobold in your life https://www.amazon.com/gp/aw/d/B08P5JHCG7/
soap ouija board, for talking to particularly neat spirits https://www.amazon.com/ResinWorld-Planchette-Gothic-Silicone-Pendant/dp/B08KJHSX9B
big gem for kobolds https://www.amazon.com/RESINWORLD-Faceted-Silicone-Diamond-Engagement/dp/B09KZHB5V5