Monster drops- simple/practical

[Seeya]

I like this idea i was having, since its a posibility to come true.
How about adding some drops to Zombies? Or T-Rexes? Probably an age-old question, but i think theres obvious drops we can give to them.

Zombies-
Skull hat
black skull helmet
(perhaps) Zombie shirt

T-Rexes-
Golden/Crystal edge (verrrry rare)

Anyone got ideas? I'm pretty sure this is something Tig could actually do without Stefans help, and it'd give us a reason to -farm-, which is content in itself.