Off the top of my head...
Booty Grab in a tank with a Prince Enki may get you an Enki's Catch, which only has Alchemy ingredients and formulas. Other fish can get you Giftboxes, which could be useful. Plus, the gold helps in building Alchemy funds.
Towns will get you papers, flowers, and bugs needed for the Case and Cache formulas, so that's also a good way to build some income. Other ingredients for those two formulas can be found through Fishing, Word Bump, zOMG, and I think there's need for some tickets too...
And the Case and Cache should get you many other components. Should, anyhow. It's a chance item and there's a lot of stuff in there. Other than that, you've got the Marketplace, and the Bifrost shop for a few items.
Anyhow, look around this forum, especially for threads that are guides to Alchemy. They have a lot of good information.