You can use the online portals that takes order for online Image cutout, like above that could be ever lasting gift.
This could be another Good Idea of Gifting to your Boss who is Leaving. Easily Available on Amazon.
Choose wisely by keeping you boss habit in mind
This is also one of the best choice for gifting to your boss who is leaving.
Nothing can give more happiness than the beautiful past, you can use a group photo with your boss and get it framed to gift him.