This save has Piston stairs, piston trap and piston bridge. There's also a door for each creation to see how the red stone is placed etc.

Check out all my other projects

Mushroom Tree House
http://adf.ly/2prVL
Mushroom Farm
http://adf.ly/2prVM
TNT City
http://adf.ly/2prVN
Self-Repairing Bridge
http://adf.ly/2prVO
NPC Village in 1.8
http://adf.ly/2prVP
Paradise Garden
http://adf.ly/2prVQ
Survival Hell
http://adf.ly/2prVR
Fully Automatic Cactus Farm
http://adf.ly/2prVS
Piston Secret Door
http://adf.ly/2prVT
Awesome World Seed
http://adf.ly/2prVU
Piston World
http://adf.ly/2prVV