When doing japa of the mantras for the nine planets, do we need a separate mala for each planet?
We place the emphasis on devotion, not on things. It has been my personal experience that when I learned the mantra, all the things I needed magically appeared. Therefore, spend your time doing the practices instead of searching for the “proper” things with which to do the practices. I saw a lot of sadhus wandering in the bazaars, who never had sufficient time to do their practices because they were so busy looking for things.