Most of them had something.
A weight reduction bag, LDoN I think, still carry it around.
One had 10 mana and 10 health potions, that restored you to 100%. Those were nice to have, wish I could buy more.
One had 10 crystals that still sit in my bank that cast some spell. Didn't think those were very worthwhile.
That's all I remember, so someone can remind me of the others.
I don't remember which expansion they came with.