If you are interested, Apache Comdev team added Lucene and Solr items to
RedBubble:
Lucene:
https://www.redbubble.com/people/comdev/works/40953165-apache-lucene?asc=u
Solr:
https://www.redbubble.com/people/comdev/works/40952682-apache-solr?asc=u
RedBubble:
Lucene:
https://www.redbubble.com/people/comdev/works/40953165-apache-lucene?asc=u
Solr:
https://www.redbubble.com/people/comdev/works/40952682-apache-solr?asc=u