Put the effect of custom throwable items in the item description.

[Egon the Monkey]

I love the custom EFU throwables, but not all of them are documented properly. The wiki contains some details, but the descriptions are bare, and due to scripting limitations say "Item: Choking Powder". In the case of things lke Laughing Gas, you might assume the item just has a flavourful description for Choking Powder. In fact, the two items behave very differently, and are useful against different sorts of enemies. Because they have different DCs, and target different saves. In the case of at least one it's not a cloud spell at all, but effectively a summoned monster.

So for Flash Powder, it could actually say "DC X Fortitude safe vs Blindness in a Huge area" or whatever the actual effect is. For Stancebreach, it could have the same text as on the wiki. This would encourage players to use the cool items you've built, rather than selling them to the NPCs for trivial amounts of money. In the same way, you could add the EfU-specific damage rules for Alchemist's Fire, Caltrops and Acid Flask. Which aren't all that well known, despite them now being vastly more useful.

[Howlando]

Better to improve wiki documentation than the laborious undertaking of updating every item description in the mod, which would truly be hellish.