Carved Stone Blocks.

It is probably obvious Minecraft is based around creativity, and to support that statement, we have banners, armor trims, decoration blocks and more. Well we can clearly achieve more than this, by using a stone cutter to carve beautiful art into the following: Stone, Deepslate, Bricks, Dripstone and Tuff. we can create any form of art into these blocks. This feature would also come with templates and a new carving tool, made with a piece of tuff and 2 wooden sticks, this new tool helps make custom carvings, it works pretty much like a pixel art tool.

The Blocks would also reduce thickness by 1 pixel, and would act like walls, not allowing mobs to jump over them when they are surrounded by them. To attach these blocks, the player needs to get a wooden stick and right click it between the blocks, this will play a sound effect of the stick breaking and the stick will be split in half and placed between the blocks.

I would have attached some mockups on how this feature would look like, but unfortunately I can't.