Interest play incorporates sexual or BDSM elements into existing interests, hobbies, or activities - combining two interests into one experience.
Examples include erotic cooking, incorporating BDSM into gaming, adding submission elements to fitness/sports, or sexualizing art/music appreciation.
The appeal involves deepening existing interests, creating novelty around familiar activities, and the unique combination of contexts.
Safety depends on the specific combination but generally involves consent from all parties, awareness that mixing contexts can change the activity significantly, and respect for the underlying activity itself.