I think that Agatio said he'd put them in boutique
There are 2 bosses that drop the pots, in case someone doesn't know. The Mask (boss needed to summon Beezlebub (check Steroid's guide to see where it is)) drops actually more than the Puppeteer.
Yes, it was suggested before and while it's a long run back there to the bosses that drop them, it's EXTREMELY easy to do so. I mean, putting them in a forge would be too easy. We need a LITTLE bit of a challenge.