Search for "Eaglercraft 1.8.8 Xray Texture Pack.zip" from legacy archives like GitHub or Internet Archive. The file size is typically under 1MB. It contains a pack.mcmeta and a assets/minecraft/textures/blocks/ folder.
Have a vintage copy of this texture pack? Upload it to the Internet Archive to preserve gaming history. Searching for something similar? Check out our guides on "Eaglercraft 1.8.8 Shaders" and "Eaglercraft Client Optimization." xray texture pack 188 eaglercraft 2021
Since the original 2021 pack is nearly impossible to find (most Discord links have been purged), here are ethical and technical alternatives: Search for "Eaglercraft 1