I have seen a high-profile CTO dismissed for just cause because he accepted an invitation to speak at a vendor conference in Paris. When hired, we signed a very strict code of conduct document that prevented us from accepting any valuable gifts from vendors.

A vendor once sent me a mug. I had to open the box in front of a witness.

That sounds like the definition of a bribe, which is a crime. I would advise you to not make this information public or at least public under an account that can be traced back to you.