LED Double Clear LEGO Studs With 2x4 Battery Brick | Etsy Ireland
BrickLink - Part 51409c01 : LEGO Duplo, Brick 2 x 2 Light with Same Color Top and Bottom and White Button [Duplo, Brick] - BrickLink Reference Catalog
BrickLink - Part 54930c01 : LEGO Electric, Light Brick 2 x 3 x 1 1/3 with Trans-Red Top and Red LED Light [Electric, Light & Sound] - BrickLink Reference Catalog
LEGO Electric Light Brick 4 x 12 x 2 with Battery Box Cover (30346) | Brick Owl - LEGO Marketplace
What is this light and sound LEGO brick? - Bricks
BrickLink - Part 54930c02 : LEGO Electric, Light Brick 2 x 3 x 1 1/3 with Trans-Clear Top and Yellow LED Light (Glows Orange) [Electric, Light & Sound] - BrickLink Reference Catalog
LEGO light bricks – more options!
1960s LEGO battery box and light brick | Quest for Bricks
Light Brick 2 x 3 - How long can it work? And can it be damaged? - General LEGO Discussion - Eurobricks Forums
Batteries for a light brick : Lego, The Lego Group, Consumer Discretionary Sector : r/lego