Sounds like fun!
I work as a teacher irl. This week, the whole cohort of eight graders had a learning journey to their local supermarket. I subtly created a Canva poster, titled it “ways to save money at your supermarket” and wrote “buy vouchers from Bitrefill and get cashback in the form of sats”. I sent it to students and colleagues alike. I’m sure one of these days, someone will ask me what the hell Bitrefill is!