Adds to Minecraft's nature
This is a FORGE mod, it will not work with fabric.
Pebbles can be found in groups of 1-3 in most biomes including rivers
You can craft cobblestone out of 9 pebbles
Hollow logs can be found in forests
You can make hollow logs on your own by putting any type of log into a stonecutter
More might come eventually, but for now enjoy some pebbles!