People often assume that their mementos, the records of their personal lives and the lives of their families, have no historical value. Sometimes that’s true, but many times it isn’t. Materials related to the 9/11 disaster are more likely to be important.
So if there are items you are ready to discard, and you would be willing to donate them so they could be part of your community’s and your nation’s history, consider contacting a historical repository. Let an archives or museum professional advise you whether they think some or all of your materials would be historically valuable.