Gather your passport valid for six months post-departure, plane tickets, and have Hong Kong Dollars in cash along with your ATM card for small expenses.

Pack lightweight, and bring clothes depending on the season, and don't forget comfortable, sturdy shoes for long walks.

Consider travel-sized bottles for your toiletries. Bring a towel and other toiletries if you are staying in a hostel or cheaper places.

Pack a basic first aid kit with over-the-counter medications for common ailments, along with band-aids and topical ointments.

Bring a smartphone with a charger and power bank; consider a portable camera for high-quality photos, and ensure you have the necessary adapters and converters.

Pack some energy-boosting snacks for on-the-go. Be environmentally conscious by bringing reusable cutlery, and stay hydrated with a water bottle. Hong Kong's tap water is safe to drink.

Ensure you have your favorite makeup essentials, a compact hair iron for quick touch-ups, versatile hair accessories, and a handy compact mirror for on-the-go checks. 

Add a touch of style with minimal jewelry and a wristwatch. Be prepared for unexpected rain showers with a compact umbrella, and consider bringing along a small backpack for day trips.

Include extra travel essentials such as an additional bag for souvenirs, a travel pillow for added comfort during long journeys, a laundry bag for organization, and flip-flops to rest your feet from your shoes.