Amazon.com: Lego Parts: Electric, Light Brick 2 x 3 x 1 1/3 with Trans-Clear Top and Yellow LED Light : Toys & Games
LEGO part 4771 - White Electric, Light Brick 1 x 4 with Twin Top Lights at BrickScout
Light Bricks LEGO® - LEGO® Electric Light Brick 2x3 x1 1/3 - The shop Briques Passion
Amazon.com: SCS Direct Light Up Building Blocks Bricks Set of 8 (2"x3") Bricks with On/Off and Dim Ability - Red, White & Blue Colors - Compatible with and fit Tightly with All
LEGO Light - Brick 2 x 3 x 1 1/3 with Red LED Light
Wireless Lights For LEGOs: Should You Try? – Lightailing
LED Light Bricks for LEGO Customization
Electric, Light Brick 4.5V 2 x 2 with 2 Plug Holes, Trans-Clear Smooth Lens : Part 08010cc01 | BrickLink