Pearl River Market on Broadway btw Grand and Mercer is not a secret place. But since I'm on a buy-it-online kick, here are some pretty mostly bathroom items that are available online. I wouldn't recommend using them for their intended purposes (as talcum powder or soap), but rather to decorate with. I use the Mermaid Talcum powder as a Q-tip holder in the bathroom.
$1.50 (not joking)
Facial Powdered booklet $2.50Twin Sister Talcum Powder Set $5.95
PS: Pearl River also has lighting, furniture, kitchen things, and other stuff you didn't know you wanted!