Many Boxes, Many Rockses

The primary source of A Box of Rocks is the Zskera Vault. Zskera Vault Keys are purchasable with Dragon Isles Supplies, allowing you to run the vault across multiple characters each week to accumulate boxes. Running 13 characters weekly is a viable low-effort approach to build up stock over time.

Boxes of Rocks can also be found in the Waking Shores. Known locations include at 20, 39.9, at 23.4, 58.5, at 24.6, 55.5, at 26, 55.3, at 27.6, 59.2, at 28.3, 57.8, at 28.6, 50, at 29.1, 60.7, at 29.8, 47.4, at 30, 59.1, at 30.5, 49.3, at 32, 58.7, at 34.3, 48.1, at 35, 45.3, at 35, 50.6, at 35.6, 68.4, at 39.3, 55, at 42.4, 39, at 42.8, 67.4, and at 42.8, 67.5.

A Box of Rocks is tradeable and can be purchased from other players on the Auction House if you prefer not to farm the Zskera Vault or the Waking Shores locations.

Once you have accumulated enough boxes, open all 50 to release the elementals within and earn the achievement along with the Tiny Box of Tiny Rocks toy.