This addon adds a Lago brick, which comes in 3 colors (more coming soon) - red, blue and yellow. Here's how they look in practice:

How do you make them? First you have to find a Lago box. It naturally generates everywhere in overworld (if you can't find it you can get it with /give @s lago_addon:lego_box)

Here's how it looks like:

On the box you can see the amount of blocks you'll get (74 in total) and example creations, that you can make with them:

So how do you get Lago bricks? First you have to break the box and unbox it 

You'll get 37 Lago Pieces. Now you have to make bricks out of them:

Use stone cutter for this. Now you'll have 74 red bricks. You may just use them, but if you want to get blue or yellow bricks, you have to put the red bricks into the stone cutter

That's it, have fun with all of your Lagos in your Minecraft PE world:)))))