Being a huge Marvel fan today’s rumor makes me very excited about the possibility of bridging the XMen and Fantastic Four with the Marvel Cinematic Universe. This would enable Lego to create more sets around the mutants and Fantastic Four.
I’m sorry for your loss and my condolences to you and your family.
Before you donate, please note that depending on what your son had in his collection it might be worth thousands. It may be worth selling on our marketplace forum to offset any cost to recent expenses. You can snap a few pictures of his collection and many people on this forum can quickly identify sets and value for you so you can focus on more important issues.
Also local elementary schools are always looking for Lego for after school programs.