The Mob Trap collection chamber
As seen from the SkyHouse Survival Series ran by yours truely,
You can witness how it is incorporated into the series by hitting up my Youtube Channel, Angry Gorilla Youtube

Also! Don't forget guys to subscribe to my account I will keep posting new stuff roughly every day so you can keep altering your Minecraft experience. Not to mention that guys do check out the existing submissions swhich is including projects and skins. Also don't hesitate to comment on a idea you will like me to make or even leave some precious Diamonds behind.