minecraft-assets/data/minecraft/recipes/bundle.json

{
  "type": "minecraft:crafting_shaped",
  "pattern": [
    "-#-",
    "# #",
    "###"
  ],
  "key": {
    "#": {
      "item": "minecraft:rabbit_hide"
    },
    "-": {
      "item": "minecraft:string"
    }
  },
  "result": {
    "item": "minecraft:bundle"
  }
}