New Poll! Which weapon would be a fun addition?

Last week, Punisher suggested that we ask about what item players find most valuable in their game.  It seems that most of us prefer iron, given its abundance and durability!

Old Poll Results:

Iron	5 (71%)
Gold	0 (0%)
Emerald	1 (14%)
Diamond	1 (14%)

Votes so far: 7 

Diamonds are fun when you come by a lot and emeralds are great for those of you with villager farms!

This week's new poll is another hypothetical question. Pretending that Mojang makes all of these weapons well balanced and suited for the game, what weapon do you think would be a fun addition?