Yes, the roli-chawal bottle set included in the Rakhi gift hampers from Nestasia is reusable. The set typically consists of small containers or bottles filled with roli (sacred red powder) and chawal (rice grains), which are traditionally used for performing the Rakhi ceremony. After the ceremony, you can store the remaining roli and chawal in the bottles for future use. The bottles are designed to be durable and can be refilled as needed, making them convenient and reusable for subsequent Rakhi celebrations.