Electronics (leave large electronics at home, but bring iPods, cameras, laptops, etc.)
Sunscreen
Designer items (clothing, cosmetics, perfume, sunglasses)
Brand name items
Gourmet cheeses (especially cheddar)
Really good gum

Nice bedding (if you are moving here)
Cash exchange- bring ATM and credit cards!
If you are coming from Canada or United States, you don't need an adapter. Colombia is 110 Volts, type A plug.

Leather goods (jackets, hand bags, etc.)
Hand-made crafts
Cigarettes
Hair brushes
Services (tailoring, salon services)
Surgery (laser-eye, plastic)
Medicine (very easy to get many items that require a prescription in other countries, they will be called by the name of their active ingredient)
Custom framing and mirrors
Prescription eyeglasses

Daytime
Boots/Comfortable shoes
Jeans/Leggings
Light jacket/ Sweater
Short-sleeve shirt/ long-sleeve shirt/ t-shirt
Scarf
Umbrella
Face cream with sunscreen
Sunglasses

Nighttime

For men:

Button-down shirt/nice t-shirt
Jeans
Dress shoes/nice sneakers
*Wear what you would wear in any other big city, but know that even the most exclusive and upscale clubs do not have dress codes
For women:
Heels/boots
Jeans/leggings
Casual-elegant blouse/shirt
Scarf
Jacket