Donate your old computers to the Turing Trust
I stumbled across a leaflet for the Turing Trust in my local swimming pool in Sherborne where Alan Turing went to school. We've had a number of old macs knocking around our office for a while now and we were unsure of the most environmentally friendly way of recycling them.
The Turing Trust is a registered charity that reuses computers to help bring digital education opportunities to African schools.
If you have any old machines lying around the office this is a brilliant way to give them new life: