I am struggling to find one more enchanted thread and one more dwarven cogwheel. I need these to buy the last two clothing items from the tailor, but I have completed all quests and events save for one secret event, and I have checked and re-checked every combat zone plenty of times and there are no remaining treasures to discover that I can see.
Thank you! I have a box, I haven't figured out how to open it but I hadn't really tried much either. I will look there!
edit: oh you just open them?? This whole time I was thinking I needed to take them to the right place and do the right thing to make it open. I think it being a key is what fooled me.
I got the enchanted thread and the dwarven cogwheel. But I forgot to mention I also appear to be short by two Solarite. I have two items which can be upgraded to a Solarite version I think (Willpower ring and Allure pendant) but there are no more treasures I can find. I tried opening several more mystery boxes but I am just getting generic items from them now. Are there two more Solarite available?
Actually based on what Good Dirt said below, it sounds like they just aren't available.