Welcome to the forums!
By all means post your items for sale! The ones that don't move, post as freebies for someone to pick them up. Even old stuff can be used as patterns or portions disassembled and used.
Our forum classifieds will get Airstreamers as well as Craigslist! Both are free to list!
Good luck! Thanks for thinking ahead!! Sometimes folks will throw stuff away just the day before a forum member knows it would have been available! Post pics of the stuff, it will really help!
Mrs. NorCal Bambi (traveling in S Tardis ~ from the Great State of Jefferson)