I must make my own book planters pronto!
They're from this Italian site. And although I've sung many Italian arias, I never sang about book planters. I typed in the caption: "Libri eco-friendly per ogni stagione" into FreeTranslation.com, and it gave me: "You hover echo-friendly for every season." HA. Oh really? Doesn't libri = books? Anyone speak/read Italian? :)