You can take a look at https://wiki.trinitydesktop.org/Icon_Sets https://wiki.trinitydesktop.org/Icon_Sets But note that most of these icon sets will scale quit

You can take a look at https://wiki.trinitydesktop.org/Icon_Sets https://wiki.trinitydesktop.org/Icon_Sets But note that most of these icon sets will scale quite badly to modern HiDPI resolutions. (Though you could scale them manually using Lanczos upscaling, which usually gives a nice 'watercolor' effect preserving the broad look of pixel art.)