Flower pot

Flower Urns are pots that appear in Mad Monster Mansion in Banjo-Kazooie. When Kazooie lays eggs in them, they sprout flowers. They will then say "Thank You" in a long, spooky voice. If Kazooie lays eggs into all the pots to sprout flowers, they will reward Banjo with a Jiggy.

Trivia
Because of the way the Flower Urns talk, people often mistakenly hear the pots say "something else" of vulgar nature. Rareware has mentioned that this is untrue and that the pots merely say "Thank You".