The Government is to set up full-time electronic waste processing facilities to mine minerals from unwanted computers.
The annual eDay, to be held on 6 November, is in its fifth year.
More than 83,000 items, weighing over 970 tonnes, were collected last year. Organisers predict there could be up to 1300 tonnes this time around.
Environment Minister Nick Smith says electronic waste contains minerals such as lead, mercury, gold, cadmium and silver, which could be re-used.
The Government is spending $1.1 million on running 40 e-Day venues and establishing 20 permanent depots for electronic waste throughout the country, as well as recycling facilities in Auckland, Wellington and Christchurch.