USGI Shelter Half

Single section of shelter half along with 3 pole sections and 5 stakes is required for East Wind.
This was the standard issue item for infantry guys at the time and has proven in past East Wind events to have a great deal of utility.
Obviously they can be used as a tent when teamed up with another soldier and his shelter half. What may not be so obvious is how generally useful a largish piece of fairly waterproof canvas can be in the field.
Shelter halves have been used as fox hole covers, tent floors, tent roofs (when leaks occur) privacy screens, and any number of minor tasks.
Shelter halves are also darn near free since the market is just loaded with the things.
Make sure that your shelter half is still repelling water. If not lay it out and iron it then spray it down with some Scotch Guard, Nikwax or Canvak. A shelter half that does not repel water is not of much use.

USGI Shelterhalves in use at EASTWIND.