Visit some of the fansites for information on finding reagents. There are way too many to try to list here. Just be sure to change realms often as you are questing, and be sure to pick up everything you see. Even if you don't need it now, you might need it later.
I know that finding reagents is hard. I have challenges finding them myself. I have read about and thought of ways to fix this. :)
I have read about people wanting to trade reagents and pet snacks like treasure cards and i support that greatly. It will make it easier to get reagents and enable us to help each other craft. I would not care if we can trade pet snacks or not, but is a good thought and it and would be nice.
It would also help with crafting if there was a bazaar only for crafting. Have every type of regent at an infinate amount. The rare the regent the more it would cost, of course. The guy there would also have recipes from all over the spiral. And can there be more recipes for houses that are easier to craft.