It's been a while, but here are some illustrations of the piston, sticky piston, slime & honey block. Cheers! : r/Minecraft
Sticky Piston | Minecraft Wiki | Fandom
Challenge: Make redstone builds without any sticky pistons, slime, or honey that heavily rely on them (e.g. doors). Here's my kind of flush/seamless 1×2 piston door : r/redstone
How to Make a Piston in Minecraft: 11 Steps (with Pictures)
Sticky pistons and slime blocks - MCPE: Discussion - Minecraft: Pocket Edition - Minecraft Forum - Minecraft Forum
New Piston Mechanics with Slime Blocks! - 3 Cool Inventions! - New Snapshot - YouTube
Slime Block From The Future (Sticky Slime Block from MC1.8! And More!) - Minecraft Mods - Mapping and Modding: Java Edition - Minecraft Forum - Minecraft Forum
Slime piston | Minecraft Blocks | Tynker
How to make a piston and a sticky piston in Minecraft - Gamepur
How to Make a Trampoline in Minecraft: 12 Steps (with Pictures)