• ✓Idea: sell the things you designed and count out change
• ✓Reads your Design Studio shelf (empty → go make something first)
• ✓Price each item, then open the stall for a customer
• ✓Tap coins & notes to make exact change; a nudge if it's too much
• ✓Sound, house points per sale, Beary hosts
• ✓"Exactly right!" then the next customer
• ✓Works on every screen

✓ = done · ☐ = planned. Every game is built one step at a time like this.