DAI Where can I find dwarves plates/vase/ dragon's statue ?

Hi! I'm redoing DAI and I'm a HUGE completionist (and i'm french, my translations might not be the best, sorry). I'm clearing all my quests before the last main quest. All I have left are the camps quests, one for the Hissing Wastes where I need a dwarf plate, a dwarf vase and a dwarf dragon's statue. I've already cleared all the maps so I don't know if I can still find it fighting some mobs or with some merchants. For the other quest I need 4 malachites, and again, since I've already done this quest I can't seem to find others malachites. Do you have any tips? Thanx! 🌱