How to convert "useless" stuff into Crypto

Some of us have the "first world problem" to keep stuff we dont need anymore. These things aren't trash most of the time, we just don't have any reason to use it anymore.

For example:

I usually support Humbe Bundle and like the bundles + the charity factor. But most of the time i get like 15 games and play only 3 of them. One week ago i started to sell my stuff for crypto and it worked kinda well. Here are some marketplaces for you people!

Marketplaces using / accepting Cryptos