When in either hand does no damage at all
Note: Minify the command to avoid issues :)
Cuddle brick
Spiked bow
Carrotron 5000
Bone of destiny
go 1000mph with a walking stick
TnT
Get cool minecraft banners in ONE COMMAND NO MODS!
Herobrine's Flesh
goldminermac
goldminermac
lunaglimmer
dantdm
orangecreep3r
cyarith