I designed and build a collection of 120 bags and accessories on my own. During the launch and in front of my colleagues and clients, My forgot to mention my name and my work and I haven’t being credited in any of the press release / social media post. What should I do ?

I'm a freelance designer and sailmaker and some of my work is to recycle old sails and turn them into bags for a charity which help raising money.
An other charity ask to design and build an entire collection of bags and accessories using liferaft and they gave me 2 month to complete the task on my own. An entire collection of 120 bags and etc…
It's kind of a big deal and they organised a launch in a restaurant with approximately 60 poeples to present all the bags that I made.
This is the biggest thing I ever done in my career.
But during my boss speech, he didn't mention my name and my performance at all, no a single word about me.
My name and contribution doesn appear I. Any of the press release and social media posts.
The feedback from everyone was really good and they allready sold out half of the 120 bags a week later.
But I feel completely left out.
I already confronted my boss about it and he told me that he forgot and that he didn't want to embarrass me in front of everyone there. He apologized and said that he won't do it again.
It's very unlikely that an event like will ever happen again so I'm pretty sad.
What is my next move.
I'm freelance so I can just move on but I really like what I do.
Help