Baseball bat used by Willie Mays, National Museum of African American History and Culture https://www.rawpixel.com/image/8848817/baseball-bat-used-willie-maysFree Image from public domain licenseBamboo stems covered with frivolous etchings. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3304215/free-photo-image-graffiti-chinese-writing-jungleFree Image from public domain license