Informal

• Phone just to thank them.
• Give a monthly award for contributions.
• Create a yearbook of volunteers.
• Send a letter to their CEO, and copy Human Resources.
• Give tickets to an event.
• Offer a free professional development session.
• Write an article about them.
• Nominate them for a leadership position.
• Help them network.
• Use them as consultants or advisors.

Formal

• Designate levels of achievement.
• Celebrate anniversaries of volunteer’s years with you.
• Produce a video of their work with you.
• Provide incentives for volunteers’ contributions.
• Provide fees for educational or self-improvement programs.
• Create a special assignment for special volunteers.
• Give the volunteer ownership of the task.
• Donate to the volunteer’s charity of choice.
• Name an award for an outstanding volunteer.
• Establish a group award to promote teamwork.