I have uploaded a PKGBUILD for OpenClipart (daily package) to the AUR. My other older PKGBUILD for OpenClipart targets the release 0.18 which is from 2005. This (new) version is taken from the daily snapshot of OpenClipart, so you will have a lot more and new cliparts. Today they include about 12000 new cliparts!
There is just one small negative point. The daily snapshot is not seperated in categories, so all cliparts are in one big category. I hope that the OpenClipart team will release a new version very soon, so that there will be categories with the new cliparts again.
Nevertheless, have fun with the new cliparts. If anyone knows, how to split the cliparts in seperate categories (like the old one), let me know.