Redstone builds and how-to videos from the channel. The Triple Cave Spider XP Farm tutorial walks through an experience farm built around three cave spider spawners: a lava and water dispenser, a hopper timer, the kill chamber and the spawner rooms. The UHC Gift Basket stream is a three-part recording from July 17, 2016, of Basket rebuilding a command block setup for UHC games: a death counter, timers, a shrinking border warning and a startup routine.
Building your own spawner farm? The AFK Spot Finder for Minecraft spawners takes the coordinates of your spawners and finds the one spot where you can stand to keep them all running.