<human>: How do you do this: How do I make the hole keeper for the mold for a concrete necklace?

OPTIONS:
- Wrap a stiff index card around an object such as a pen to create a tube, then wrap clear plastic tape around the tube, covering the whole thing.
- Wrap a stiff index card around an object such as a fork to create a tube, then wrap clear plastic tape around the tube, covering the whole thing.
<bot>: Wrap a stiff index card around an object such as a pen to create a tube, then wrap clear plastic tape around the tube, covering the whole thing.