Destard Construcs drops +4 AC and +5 / 15 dmg reduction armor
and a +4 STR bracers
Destard Demons drops a +5 STR belt
note that these drops except the armor, only occur wen the monsters are spawned OUTSIDE destard dungeon
At Barovia, the Adventurers guild lost city guardian spears drops 2d6 piercing dmg , keen, +2 spears
the same adventures guild has a sword on its wall, it contains the property Holy Avenger, dunno if its allowed, its also +2, keen and 1d4 positivee dmg
The Barovia Dark monastary undead monsters drops a staff that gives +10 positive energy protection
near destard at Eranas something, you can get a staff that gives 3 spell slots both to sorc and wizards
at that city to the west, leybury I think, the horse like men, drops scimitars that gives 2d4 cold dmg
thats all I can think of