Yuxin Treasure Box - 3x3 that can be opened - 12.99€ - Cuboss.se
YuXin Treasure Chest 3x3x3 Magic Cube Stickerless_3x3x3_Cubezz.com: Professional Puzzle Store for Magic Cubes, Rubik's Cubes, Magic Cube Accessories & Other Puzzles - Powered by Cubezz
Cubelelo YuXin Treasure Box 3x3 Stickerless Puzzle toy speed cube - YuXin Treasure Box 3x3 Stickerless Puzzle toy speed cube . shop for Cubelelo products in India. | Flipkart.com
Two years ago, my now-husband proposed to me using a treasure chest cube that only revealed the ring once solved! Rubik's cubes also featured heavily at the wedding earlier this year :
A Rubik's Cube that doubles as a treasure chest. It only opens when solved. : r/ofcoursethatsathing
Unsolved Rubik's Cube Treasure Box - Delphi Artist Gallery