Use your time to learn some new skills or become more of an expert on existing skills. My best experiences when interviewing someone is when I learn something new. If you are a Java developer go through all the proposals to be added to the language so you can discuss. If you are a front end developer, try one of the new frameworks and be able to discuss pros and cons against react for example.
You can also make some open source contributions to show you are still gaining skills even if not getting paid.
You can also make some open source contributions to show you are still gaining skills even if not getting paid.