Here is a JSON code block with multiple objects:

```json
{"id": 1, "name": "First Object", "type": "test"}
{"id": 2, "name": "Second Object", "values": [1, 2, 3]}
{"id": 3, "name": "Third Object", "active": true, "metadata": {"created": "2023-05-15"}}
```

That's it! 