Here is a Peace Corps packing list loosely based on the list that I was given as a volunteer.

Bring:

Mens Clothing
A nice dressy outfit for first week dinner with officials
Sweater, sweatshirt, long sleeve shirt (think about hand-washing these items, you might not want all three)
Bathing suit
Pants quick dry, khaki fabric with hidden security pockets/zippers
Professional clothes in wrinkle-free fabrics
Good underwear
2-3 pairs of socks, dressy and white cotton

Womens Clothing
A nice dressy outfit for first week dinner with officials (understated and not short)
Sweater, sweatshirt, long sleeve shirt (think about hand-washing these items, you might not want all three)
Pants quick dry, khaki fabric with hidden security pockets/zippers
Skirts Convertible travel skirts such as those made by Macabi were very popular with the women in my group.
Professional clothes in wrinkle-free fabrics
2-3 pairs of socks
Bathing suit

Both:
Nice comfortable shoes
Good pair of athletic shoes
Comfortable sandals, flip-flops, Chacos (PC discount)
Good exercise pants and shirts (1 ea)
Linen/cotton clothing (risky these easily wrinkle)

Misc Items:
Glasses/Sunglasses
Contacts/solution

A good sun hat, bandana
Good quality raincoat
Water bottles (Nalgene-type)
Batteries (AA, AAA, re-chargeable a possibility if you have electricity)
L.E.D. Headlamp

Slippers for cool evenings

Camera

Duct tape Useful in so many ways. We used it for repairs, packing/shipping, mounting things on walls, holding up shower curtains, etc.

Small backpack/daypack for 3-4 day trips
Towel (Quick dry camping towel works best)

3 months worth of toiletries (shampoo, conditioner, soap, toothbrush, toothpaste, deodorant, razors)
Hairbrush and/or comb

Clips, rubberbands, headbands, scarves

Cheap, durable watch
Small, portable alarm clock

Leatherman tool or Swiss Army Knife

Money pouch (for belt or leg)

Not necessary but useful for some volunteers:
English dictionary, Scrabble dictionary
Pictures from home
Shortwave radio
Wall calendar
Solar shower

Cookbooks
Favorite recipes from home
Measuring cups and spoons
Decent quality chef knife, paring knife Youll probably be chopping a lot of vegetables and maybe butchering a few animals. Good kitchen knifes are very valuable.
Knife sharpener
Spices/Spice packets
Pepper, pepper grinder

Power adapters (voltage adapter and plug adapter)
Power strip (they may be available in-country, but we had to buy four because they were so cheap and quickly burned out)

Music player, music (lots of space, youll trade music with other volunteers)
Tupperware
Ziploc bags, multiple sizes

Money/Travelers Checks (for vacation travel)
Your favorite pillow (if you are picky about that)

Clothing catalog (to show local tailors)

Good pens
Games Card games, board games, Scrabble dictionary, etc.

Good flashlight
Seeds (spices, veggies)

Art supplies
Childrens books
World map
Photo books about the U.S. and your home state
Calculator
Stapler
Appointment Book

Audio books
Stickers

Digital voice recorder For language practice and working with a tutor.

Gifts for host family

Dont bring:

Too many books
Too many shorts
Too many white clothes (theyll turn brown)
Spaghetti strap tops
Too many socks

Over the counter medicine (all will be provided by the PC)
Too many electronics
Mosquito repellent (provided)