Many of the existing treasure generators are very tied into a campaign. They would include very specific treasures like "Wand of Ghoul Touch" or "1,500 gp". Even the gold pieces amount isn't very helpful because they depend on a specific ruleset.
I would like something that would work with most kinds of generic fantasy campaign. Maybe something suited for roguelikes? Tavern Maker does a good job of generating pickpocketable items, but it doesn't generate a whole hoard.
Some common things would be things like magical armor, masterwork weapons, or artwork.