Are there any lighting kits that have the LEDs in Lego or compatible bricks?

[Wonderpants]

I started trying to install a lighting kit for the Titanic that uses LED light strips and bit lights, but don’t like the way you have to run the lights between connected tiles and plates, resulting in them not sitting quite flush, or the way light shines through gaps and even solid bricks. Rather than giving up altogether though, I wondered if anyone sells kits with the LEDs fitted into bricks or plates, and which ideally can be daisychained together, which might solve this issue.