Where I can find: dry staff, log bow, decorative legs, bell of the curse god, cursed crab claws, cursed blood?

Log bow and Dry Staff are Bronze ID-type weapons. Pretty sure Log bow is level 1, I'm not sure about Dry staff. Try getting Bronze ID weapons around Onigashima/Kikaigahara.
Decorative Legs is a rare blue from Yatsukazou, the boss from Oonaobi Shrine in Izumo. It appears in Miroku's bargain sometimes.
Bell of the Curse God is a rare blue drop from Tsujigami, they appear in Nishidera and Shinoda Forest (Kyoto)
Cursed Blood is from the Bloody Nyuudou, a boss in Nishidera.

I got no clues for Cursed Crab claws. I got it when I dissolved a magatama but I forgot which.
EDIT: Oh welp. Here ya go:
http://onigiri.wikia.com/wiki/Oni-basami

I'd like to ask a question here 'cause I don't want to make another thread: Can I get those rare weapon like Gandiva and Iwaotoshi from the Oninodachi recipe from the quest Yoshitsune gave me when she taught me how to craft weapons?
If I can, should I do it?

Or you could ask here instead of making threads to begin with.

viewtopic.php?f=10&t=3100

And Cedar spear. Where i must looking for it?