LEGO MOC Black Brick (Puzzle Box) by BuilditBetter

LEGO MOC Gemini (a mini puzzle box) by cheat3 puzzles

LEGO MOC Traffic Jam (a level 7 puzzle box) by cheat3 puzzles

LEGO PUZZLE BOX!, Showcase and How it works

LEGO MOC Jailbreak Puzzle Box by adam0904

Build Your Very Own LEGO® Puzzle Box - Art of Play

MOC Mimics Treasure Chest Monster Yaranzo Building Blocks Kit Creative Game Assmble Puzzle Box Brick Model DIY Kids Toys Gift

LEGO MOC Seven Puzzlebox by CrayonLand Bricks

LEGO MOC The Master Sword Box - Puzzle by legolamaniac

Another easy 2x build that doesn't break the bank! A bigger better mec

LEGO MOC Fire Puzzle Box by Gsabey08