The Signature/Thompson reps work with local charities and will pass along any items you wish to donate. If you attend the orientation session they will likely explain the idea.
I wish we would have known before we left because i would have packed some items purposely to leave behind (shoes, clothes, feminine products...)
Unfortunately luggage weight restrictions limit how much we can take, but again had i known, i could have packed a few extra pounds of gently used items to leave behind.
I think it's a great idea and felt it important to pass along.