Luggage and bags:
Cork is not the easiest place for pulling bags on wheels about. A rucksack would be better with a smaller version for carrying day to day items. Bum bags are not a good idea. A discreet money pocket worn under clothing is safer.
Clothing/Shoes/Weather Gear: Comfortable shoes for climbing hills and walking miles. Unfortunately rain gear is needed whatever the season. But in summer a cheap plastic mac and fold up umbrella should be fine.
Toiletries and Medical Supplies: Toiletriesare available in all big supermarkets where they will be cheaper than in pharmacies. Obviously prescription drugs will have to be bought from a pharmacy but cold and flu remedies, anticeptic creams and other basic medical supplies are all available in supermarkets.
Photo Equipment: Available in many photo shops but it would be cheaper to bring your own.
Camping/Beach/Outdoor Gear: The one or two camping shops are not cheap but beach wear etc., is freely and cheaply avilable in all chain stores.
Miscellaneous: Supermarkets here, especially Dunnes and Tesco in the ctiy centre and suburbs, are good one stop shops for almost everything. It's probably agood idea to bring your own sun protection products because they tend to be expensive here.