Clothing for Humid & Tropical Weather, Singapore
Luggage and bags:
Airport facilities are good so quite unlikely bags will get severly damaged.
Clothing/Shoes/Weather Gear: Light cotton clothings and light sweater for rainy days. But most clothes can be bought upon arrival (see shopping)
Toiletries and Medical Supplies: Easy access to pharmacies and doctors
Photo Equipment: Easy access to film, developing centres and hardware
Camping/Beach/Outdoor Gear: Definitely bring your bikinis and beach gear
Miscellaneous: Sunglasses, hats for the bright, sunny days