Trap

Now you will can have a block of the category "redstone", that you made with 4 sticks, 4 leaf litters and 1 dirt (you will made a trap, that when some entity is above, it breacks), but you can use 2 redstones and 3 stones to made a trap that when you step emits a redstone signal, but don't braeck (the redstone trap). Both of them have a texture of a grass block at the top, but the top have some pixels of the lieaf litter