Portugal doesn’t have many charity shops and I have not seen any near us not like the U.K. There are a few websites that sell secondhand furniture and Facebook Marketplace Portugal is a good place to look for second hand furniture or to sell items and offer items free to collectors. Facebook is very popular here and there are many Portugal related Facebook pages you may wish to join.

OLX is also another great buying/selling website.

There are also flea markets and car boot sales where you may pick up a second hand bargain.