Creating Slabs With Blocks That Don't Have Slab Variants
By placing a sulfur cube on top of a wall, and then pushing another wall inside of the sulfur cube, you can make slabs of any block that a sulfur cube can become. Just throw a splash potion of invisibility on the cube to get rid of the outline, and you'll be left with just the block.
u/Dirty-Byrd — 3 hours ago