If your employer has a volunteering program, participate.
If your employer does not have a volunteering program, consider starting one.
(or find an employer that does)
[ my public key: https://keybase.io/jaycuthrell; my proof: https://keybase.io/jaycuthrell/sigs/mx_k4yDLH0zNkcukrcG8b3dXpl3R-Aojl92O9sYhYiI ]