Sets that have 54930cx1: Electric Light Brick 2 x 3 x 1 & 1/3 with TrRed Top and Red Bulb
LED Light Bricks for LEGO Customization
LEGO Light Brick - LEGO Town - Eurobricks Forums
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 LED Electric 2x3x1 1/3 Trans-Red or Clear Top Christmas House | eBay
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 Ventures spins out Light Brick Studio to make digital learning games | VentureBeat
LEGO Light Brick Internals and Color LED Replacement - YouTube
1960s LEGO battery box and light brick | Quest for Bricks
LEGO light bricks – more options!
BrickLink - Part 4771 : LEGO Electric, Light Brick 1 x 4 with Twin Top Lights [Electric, Light & Sound] - BrickLink Reference Catalog
LEGO light bricks – more options!
Bricks and Lights 11009 | Classic | Buy online at the Official LEGO® Shop US
5x Lego Light Brick 2 x 3 x 1 1/3 čirá kostka a žluté světlo | Aukro
Lego Electric Light Brick 2 x 3 x 1 1/3 WHITE top and Yellow LED 54930c02 | eBay
1x1 Brick NiteLite – White 5007233 | Other | Buy online at the Official LEGO® Shop GB
Amazon.com: Lego Parts: Electric, Light Brick 2 x 3 x 1 1/3 with Trans-Clear Top and Yellow LED Light : Toys & Games