Machi Koro insert for a rectangular box (16x22cm).
I couldn't find any decent inserts for this edition so here it is!

Features:
 

• Seperate removable coin storage
• Rounded corners for easy removal of coins
• Lifted center so cards can be easily removed
• Minimal use of materials (just under 60g of filament)
• Snug fit: no more loose coins/cards after holding the box upside down!