LEGO MOC Rainbow Road (a puzzle box) by cheat3 puzzles | Rebrickable - Build with LEGO
Lego Rainbow Bricks 1000pc. Very fun and relaxing! This variant of a gradient puzzle added just the little hint of a challenge without it being frustrating. Would definitely recommend! : r/Jigsawpuzzles
Lego Rainbow Bricks Puzzle
Chronicle Books Lego Rainbow Bricks Puzzle - Jigsaw Puzzle Guru
LEGO Rainbow Bricks 1,000 Piece Puzzle | BLICK Art Materials