The large influx of refugees into Greece since 2015 has been handled largely by a network of Greek and international grassroots aid organisations, many of which rely on volunteer support. Typically a commitment of at least two weeks is preferred, but people with particular language or professional skills can often find shorter-term niches to help. Several Exarhia squats provide housing and social services.
A Drop in the Ocean (www.drapenihavet.no) Reliable organisation, based in Norway, working around Athens.
Project Elea (www.projectelea.org) Greek organisation supporting Eleonas camp.
GreeceVol.info (www.greecevol.info) Database of refugee projects and volunteer needs.