Hold "Become a Volunteer" Workshops to recruit volunteers, and, if in PA, inform/walk potential candidates through process. Volunteers go on an email list which goes out for every event.
Provide food to incentivize events. At "Become a Volunteer" workshop, donuts and hot cocoa were provided as an example.
Advertise outreach events long term in the General Body Meetings even if events are far away. Add events to a mini event list to hand out so SWE members have a physical copy.
About a month before the Outreach event, add event recruitment information to the SWE Weekly Update if your section has one for members.
About two weeks before the event, create a Facebook event page and advertise it on your section's main Facebook group. Repost the event the week of too to gain more interest.
The week of the event, email each engineering department with a flyer requesting they forward it to their students. People, with the sudden knowledge, will respond because they realize they have time.
Have a Volunteers Director (such as Kristine pictured above at Mat Sci Day) to manage, keep track of volunteers, and to send out reminders/information for the event once volunteers are amassed.
Participate in large events to peak volunteer interest especially if living in PA with strict background clearances. Large events do not require background checks and are great for gaining interest.
For large events, structure demos with a format (see next step) which will make volunteering accessible. Also, if 4 volunteers are needed, take on 6 in case 2 or 3 do not show up.
Provide a write-up for volunteers with background information and sample instructions. This is an example of our simple circuit demo which is sent out to volunteers the week before an event.
At event, if volunteers are new, make sure to provide lots of guidance for them. Answer questions. Ask if they want to run through a demo once with you as practice. Give them freedom with demo too.
Remember to provide food for your volunteers! Also, sharing a meal is a great time to bring up future events and asking about their future involvement.
After the event is finished, remember to send a thank you in the end to all of your volunteers. Notify them about future events. Provide stats on how many people they impacted.