Weavers in Varanasi in India contributes to the holy city going through 600,000 condoms a day by using the condoms' lubrication in the production of saris.
The BBC has a list of other uses for condoms:
Villagers use them to carry water when working in fields
For waterproofing ceilings: condoms are spread under the cement-concrete mortar
Can be mixed with tar and concrete to give a smooth finish to roads
Can be placed over the ends of guns to protect them in desert sandstorms
Drugs 'mules' swallow condoms filled with drugs to smuggle them across borders
I vaguely seem to remember they are also used for something else.
