Cool Ideas 2&3- PE Lite

So, for Cool Ideas 2&3, I decided, why not show you a mob killer and retractor thingie-majig to keep 'em away?!? So here are my ideas. #1 is the pit of doom, where you dig down a bunch of blocks (I'd say around 15) and wait for mobs (monsters and animals) to fall in. And Idea #2 shows a way to keep mobs AWAY. The light goes around and mobs try not to go near light, so put one, like, on your roof or something. I find it cool that in the mob retractor picture, you can see, in the pitch black, a zombie, if you look close enough, trying to go away from the light. So..... ENJOY:)