Thanks, didn't think fo that one. So happens I think I have one of those near the house. It'll be a bit hard setting that up, but it's the best thing from all the options I got so far.Locate on the scarecrow statues made out of hay bales. There is always a zombie spawner under it. Box it in and use water to push the mobs out of the box and down so you can kill them and collect the aspects.