Browsing eso-hub I found some items I haven't seen before. One of them could be introduced if ZOS does not want / intend to do anthing about extending CP 2.0 Craft tree.
As such:
Harvester's Hope-Ring
And some ideas for leads:
Golden Vine - harvested from: cloth-producing plants
Shimmering Dust - harvested from: jewelry nodes
Platinum Shard - harvested from: ore nodes
Ebony Splinter - harvested from: wood nodes
Vitriol - harvested from:
non-fungi alchemy plants
Aetherial Spores - harvested from:
fungi alchemy plants
Aqua Vitae Vial - harvested from: water spots (found only in the new zone - High Isle?)