Luggage and bags:
Rucksack for hiking
Clothing/Shoes/Weather Gear: Hiking shoes and gear, sun hat
Toiletries and Medical Supplies: Sun block creams and any medication you may need. The doctor will only give you paracetamol.
Photo Equipment: Camera and plenty batteries. Ten years ago there were no facility to develop films.
Camping/Beach/Outdoor Gear: Swimming costume.
Miscellaneous: Bring warm clothes if you plan to visit in winter and stay in the country - it can get very cold! But winter and summer in Jamestown is moderate - summer clothes will be fine.