We're getting an additional bag slot in Dragonflight, but it's just for reagents
Amazon.com: Kolt Mining Activity Dig Kit – Emeralds and Gemstone Mix for Kids – Excavate Real Crystals, Rocks, and Minerals – Great STEM/STEAM Teaching Tool – Rock Collection for Geology Enthusiasts Ages
Bag | WoWWiki | Fandom
Large Gemstone Mining Rough Bag Kidsloverockz Cold River - Etsy