Examples v3

ItemStack

A single normal stick

{
  "item": "stick"
}

An enchanted sword

{
  "item": "diamond_sword",
  "enchantments": {
    "minecraft:sharpness": 5
  }
}

Party Invitations

{
  "item": "paper",
  "count": 20,
  "customName": {
    "text": "Invitation",
    "color": "green"
  },
  "lore": [
    {
      "text": "Where: Nowhere"
    },
    {
      "text": "When: Never"
    }
  ]
}

Data Pack

Example Pack.zip
(pack_format may need to be changed depending on Minecraft version)