how or where can I import clipart into libre office
Hi,
you could try (!) the Openclipart.org-Extension. I’m not sure that it will work sufficiently.
After the relaunch of https://openclipart.org/ and after some “childhood illnesses” it is easy to use the built in search system; probably it is more convenient than the above mentioned extension (?).
Give it a try and share your experiences! - Cheers