[RPG] What item creation feats should an Alchemist take

I am pretty sure there is no canonical answer. In the Potions and Poisons player's companion, there is a page which shows what the component satchels, packs, what have you, of Alchemists from different regions might look like, but does not say they must look like this. For this reason, it seems to me that it can look like pretty much whatever you want it to look like, especially to fit with your character's background, where he's from, or even where he is now.

Personally, the first image that popped into my head was of the Alchemist throwing a small clay pot (since clay is far cheaper than glass) with a stopper. Another possibility that I just thought of is since the Alchemist uses magic to brew his extracts, he could also contain prepared bombs in fragile fields of magical energy and throw those, so he doesn't need to use (or purchase) containers for his bombs.

The feat Create Portal was deleted by the Player's Guide to Faerûn, but prerequisites for creating portals remain otherwise unchanged

The Player's Guide to Faerûn on Changes to Feats from the Campaign Setting says

In addition to overhauling the regional feat system, this chapter also introduces a small number of changes to other feats from the Forgotten Realms Campaign Setting. Most of these alterations are minor changes to the wording for clarity, but some of the key changes include the following.…

Create Portal: Portals are now considered wondrous items and are built with the Craft Wondrous Item feat. The new Portal Master feat makes it easier for a character to build a portal. (42)

(The Player's Guide likewise describes the feat Portal Master (42).)

So by removing the feat Create Portal, any ol' caster with access (somehow) to the correct spells and a feat with a prerequisite of caster level 3rd can opt to create a portal.

Thus, without portals requiring their own specific feat to create and the large number of high-level casters on Toril and the utility value of the feat Craft Wondrous Item, the ubiquity of Faerûnian portals becomes a bit more understandable, despite portals themselves still possessing sort-of silly yet otherwise untouched prerequisites for creation.

So you know, Underdark has a few more portal qualities (52-3), Expedition to Undermountain describes Halaster’s drifting portals (218), and Power of Faerûn and Dungeon #92 describe a portal that emits deadly flying needles (152) and coral portals (79), but these latter two designs are largely specific to the location and group associated with them, respectively.

Note: This revision means that the DM must make minor adjustments to the prerequisites of the item creation feat Create Moving Portal and the epic feat Create Time Portal.