Stone (or cobblestone I cant remember) in a square around a piece of silk (gunpowder for a creeper, bone for a skeleton), which can be obtained by defeating a spider.
Yes
No
0052
You can get a mob spawner in Minecraft by using any pickaxe (except wood) with Silk Touch 1 enchantment or by spawning it in (Dec:52).
Make sure that the light level is above 7, and that there is grass near the spawner.
Unfortunately, using the /give command will only give you a pig spawner.
Right click on the weapon spawner.
that depends on the version and edition of minecraft you are playing.
From what I understand, spiders can not be built without a certain mod.
Nothing! You do get some XP though, and the mobs stop spawning, but you cannot obtain the spawner.
It is give (your name) 92.
you place a lava block down and die