Welcome to the entrance of my ideas! Wipe your feet please...
A zoglin spawning inside a nether portal
A comparator reading chests contents through a piston
Azalea trees, one with flowers and one without
Dropped obsidian surviving an explosion
A redstone lamp receiving quasi-power
Moss converting nearby cobblestone into mossy cobblestone
A player clipping through leaves
Gilded blackstone forming around an underwater magma block