What is best to grow rock candy on?

* Easy to attach: A string can be easily tied or secured to a pencil or stick, which you can then suspend in the sugar solution.

* Crystal growth: The string provides a surface for the sugar crystals to form and grow. The string's rough texture encourages the crystals to adhere.

* Accessibility: String is readily available and inexpensive.

Other options:

* Wooden skewers: These are good if you want a larger crystal or want to create a more decorative candy shape.

* Pipe cleaners: Similar to string, but provide a bit more surface area for the sugar to attach to.

* Wire: Can be shaped into interesting forms, but can sometimes be more challenging to work with.

Important tip:

* Cleanliness is key! Make sure whatever you use is clean and free from any residue that could interfere with the crystal formation.