Rubbish for water collecton and purification

When I am out and about I am never at a loss to find something to boil water in. Northern Ireland is unfortunatly troubled with a lot of rubbish in the wild places. When I see it, I try to take it home.

Anyway if you manage to find some kind of container it is usually is not hard to get some water on the boil to drink or make a tea.

Some random containers i have found.