I continue to try getting rid of our stuff, one item, one box, one car load at a time. Most of it goes to a local non-profit or Goodwill, but there are some items that have some value that we feel bad just giving away.
A buying and selling platform I really like is Let Go. It offers both a website and app option. I personally use the app. It is very user friendly and you can easily snap a photo, add details and upload your item for sale.
I have also purchased home decor items from Let Go. The experience has been really positive. You can communicate through the app with the seller about pick-up details and any delays that come up. I bring Joel with me because I'm a paranoid person, but all transactions have been pleasant.
The prices are usually pretty reasonable, they have many categories to choose from and there is also a free section that sometimes has some good items.
I also like this site as a source of inspiration. There are several people that sell unique handmade items like the bench below that I want to duplicate immediately after seeing.
The format reminds me a lot of Pinterest. Just what I need - a second Pinterest to consume all of my time!
Happy buying and selling! With hopes of more selling than buying, at least in my case!