No longer supported, look this: https://www.curseforge.com/minecraft/customization/better-hopper-datapack
Stock your xp or orbs on ground on bottle
Current Features:
- Stock your xp
- Stock xp orb (radius 2)
- drink bottle to recover xp
- One bootle can store 30lvl (0-30)
Craft XpHopper: drop on crafting table 1 hopper and 1 bukket
Stock xp: put 1 glass bottle on the first slot and sneak on hopper