From the BBC News:

In his workshop in Mekele, just 120 km from Ethiopia’s border with Eritrea, Azmeraw Zeleke is turning burnt-out shells into cylinders used in coffee machines. Most of the shells are left over from the 1998-2000 war between the two countries. “The shells were dropped in Ethiopia during the war with Eritrea,” Mr Azmeraw says. He uses old mortar shells, which stand about one metre high, to make his coffee machines. Azmeraw Zeleke begins with a burnt-out shell. He then transforms the cylinder to channel the water, coffee and milk.