What are some film-inspired design ideas for decorating a betta fish bowl?

Some film-inspired design ideas for decorating a betta fish bowl could include creating a "Finding Nemo" theme with colorful coral and sea creatures, a "Pirates of the Caribbean" theme with sunken treasure and pirate ship decorations, or a "Little Mermaid" theme with shells, seaweed, and a castle ornament. These themes can add a fun and visually appealing touch to your betta fish bowl.