Tea bag
From Tardis Wiki, the free Doctor Who reference
A tea bag was a porous bag that contained tea leaves.
Tea leaves were sometimes encased in porous bags, making it easier to dispose the leaves after steeping.
Following his escape from a helicopter, Alexander Christian raided the Doctor's House for money and supplies. One of the things he took were tea bags. (PROSE: The Dying Days)
The Eleventh Doctor used a large number of tea bags to make a strong tea that he used to save Craig Owens life. (TV: The Lodger)
