for creepers: put blocks above your doors so they cant drop from the roof
spiders: same as creepers
enderman : water moat
zombie / skeleton : nothing :D
Pigman : Dont hit them
Ghasts : cobblestone house / bunker
silverfish : avoid mining stone in strongholds.
or if your lazy.. do lava moat this solves all.
if this gets enough feedback ill do more tips :)