Instead of just browsing the internet you could fix any issues that you found in libraries you used quite often, or help improve the libraries that helped your

Instead of just browsing the internet you could fix any issues that you found in libraries you used quite often, or help improve the libraries that helped your build your apps in the first place. This will make you feel like you’re working on something important. AFAIK many open source contributors started by supporting the projects they are already familiar with as they know how the library would be used. That would be a good start until you find something else to do. (Edit: typo)