When my nephew was serving overseas in Kuwait, we sent him a little parcel of things he probably couldn't find "over there." If I remember correctly it included the following:
- Powdered drink flavours (like Cool Aid) so as to make chlorinated water more palatable.
- Medicated foot powder.
- Bath soap, unscented ... guys don't use perfume!
- Photographs from home.
- Wet wipes.
- A pair of sunglasses - somewhat indestructible, not your cheap gas station variety.
- Powdered pudding mixes, just add milk... butterscotch and chocolate were the most popular.
- Letter writing pad. (airmail weight). I gather this was not used for writing letters! They used the armed forces aerograms for letters, if any!
- A pair of wrist sweat bands.
If you don't have a friend or relative overseas, I believe you can find how to forward such personal care parcels online. Here's two I've found.
For the United Kingdom...
For the United States...
Please READ THE INSTRUCTIONS on these websites, otherwise you'll be making life difficult for the volunteers.