E.R.
Does your husband know what Unicef is? Maybe if he gets a little more educated his mind will change. I know that when I was in school, they actually passed the Unicef collection boxes out in school. As long as your kids know what they are collecting money for it shouldn't put people off. The only reason I can think of that someone wouldn't agree with it would be political and usually people are willing to overlook their political views when it comes to kids. Good Luck!