Concrete - It’s really good for pixel art and builds in general.
Bedrock - I would say that it’s impossible to mine bedrock, but if you use a specific machine and build it exactly right, you’re able to mine bedrock. Not many people had done the achievement. Still, it’s great for building creative bases!
Barrier - When you build floating platforms and you don’t want people to jump off, barriers make everything easier. You can also place a block that can’t float (sand, torches, paintings, you name it) on a barrier block and pretend that the block floats.
