A prayer cap.
Prayer beads.
A sponge.
Cardboard.
For the average person, these items are easy to come by.
That wasn't always the case for Moath al-Alwi, a Yemeni citizen and prisoner at the Guant谩namo Bay detention camp at the U.S. naval base in Cuba. He had been captured near the Afghanistan border in December 2001, a few months after 9/11, and arrested but never charged with a crime. He was suspected of working for al-Qaida.