There are free places, like Craigslist, Offerup and I think facebook has some avenues for selling not sure, I do not do facebook. But at least you may sell some, and you are not investing any money.
I will add, I tried Craigslist and got what I expected,,, nothing. But the type of scrolling I do is very hard to sell in my area. I do pictures and they do not fit the decor of most homes. But other things, like the ornaments, puzzles, toys, etc. might do okay.