Promposal ideas pls!!

Vanessa • Buddhist • In love • Feminist
My boyfriend and I go to different schools and we're definitely going to each other's prom but it'd still be cute to prompose!! I need some ideas, stories or inspiration please!
Background info: we've been dating more than two years, he works as a martial arts instructor with kids a lot, he's really into his martial arts lmao, I could have access to his bedroom or som, I'm tight with his family not so much his training academy, he lives far enough( hour and a half bus ride), I see him 3 or less times a week, he loves food and candy, we love kinky stuff (bondage ish stuff), I can drive but I can't take my parents car,  and I can't think much more but thank you in advance!!! ❤️❤️❤️