Well, although most every block can be used as a construction block, this is a suggestion that offers a different kind of construction.
I DID use the search bar, and I did NOT find anything quite like this. If you can find this idea, good for you, I couldn't.
With that out of the way, I would like to offer the idea of physics-affected blocks that can be stuck together, kind of like Lego's. The blocks would look, perhaps, like smooth stone, with a stick pointing out on each face, so it would visually be larger than one cube, but the sticks would not affect the physics.
When one of these blocks is placed onto another (not just next to it), the two blocks would work the same as one larger block. The two blocks would fall together, could move around together, and perhaps for a bit of realism (if it's possible) would also act like they have more mass together, so that one block would move quickly when pushed, but 10 of them put together would take more force to move.
This, I believe, could have a large number of uses. For starters, you could use this to make essentially larger vehicles, which could be cool, like having it rest on minecarts for wheels and pushed by furnace ones. Another possibility could be to make effective scaffolding that could be moved around without having to disassemble are reassemble it. This would also allow you to move down through a hole in a cave to build a ladder going down instead of having to laboriously cut all the way to the side to build a staircase so you don't fall to your death.
I DID use the search bar, and I did NOT find anything quite like this. If you can find this idea, good for you, I couldn't.
With that out of the way, I would like to offer the idea of physics-affected blocks that can be stuck together, kind of like Lego's. The blocks would look, perhaps, like smooth stone, with a stick pointing out on each face, so it would visually be larger than one cube, but the sticks would not affect the physics.
When one of these blocks is placed onto another (not just next to it), the two blocks would work the same as one larger block. The two blocks would fall together, could move around together, and perhaps for a bit of realism (if it's possible) would also act like they have more mass together, so that one block would move quickly when pushed, but 10 of them put together would take more force to move.
This, I believe, could have a large number of uses. For starters, you could use this to make essentially larger vehicles, which could be cool, like having it rest on minecarts for wheels and pushed by furnace ones. Another possibility could be to make effective scaffolding that could be moved around without having to disassemble are reassemble it. This would also allow you to move down through a hole in a cave to build a ladder going down instead of having to laboriously cut all the way to the side to build a staircase so you don't fall to your death.
I counter that with a question to you. Have you ever punched a hole through a meter-thick tree trunk? X3
Also, swinging a pick in real life is hard work, something I have done. Breaking through meters of rock on your own would be incredibly difficult.