Luggage and bags:
It is very important to pack light when you travel no matter how long you plan to stay. You can always buy something if you need and also leave behind anything that you don't want to carry back
Clothing/Shoes/Weather Gear: T-shirts and light cloths for summer, but you will need a sweater in the evenings.
If you go up the moutains even if it is summer you will need something warm for the earling morning and late in the night.
If it is winter then you will need a light coat or jacket for the southern cities, but you will surely need a coat for the mountains.
Toiletries and Medical Supplies: Take along your cosmetics but try to have with you travel kits, meaning small quantity of anything. If you need anything you will surely find it in the Cypriot market of course.
Photo Equipment: Don't go to Cyprus without a camera or a video camera. You are going to regret it otherwise. In fact I don't think there is a single person who travels nowadays without one.
Camping/Beach/Outdoor Gear: A cap, a pair of good sport or mountain shoes depending on the time you visit the island, and a pair of sun glasses. (Sun tan lotion if it is summer, but you can buy from Cyprus if you forget to take one along).
Miscellaneous: Don't forget to take your medication if you take any. Of course you can find it in Cyprus, but you never know.
It is very hot and barren here. Be sure to bring a hat and top. Believe me when I say a pair of shades are invaluable here, especially around Lefkara - 'The White Mountains'
Toiletries and Medical Supplies: Sunblock, and more sunblock! Also, if you are adverse to dust, be prepared for a lot of it.
Photo Equipment: The views are the most impressive here if you like landscapes and architecture. Bring your photo gear based upon this.
Miscellaneous: Bring a LOT of fluids. There is little opportunity to stop and buy any once you are on the go.