You see that bucket depiction often with a pinecone which is still used. This pine cone is also often next to 2 animals on both sides like snakes or in this case birds. It also usually is, when held up by someone, held at the height of the head.
I believe the pine cone to be the pinial gland, positioned in the middle of the 2 hemispheres, between the 2 animals and as such symbolizes conciousness, the mind, spirit, the third eye, creativity and fantasy which you can use to see whatever you want and go where ever you want, wether it be physically by making your body go somewhere, spiritually via astral projection/remote viewing or just in fantasy itself making you visit completly different worlds.
Furthermore the Cone has the Phi ration encoded in it which is encoded through all of nature giving kind of a blueprint of this reality in on itself and as such could be a symbol for God and the divine and also symbolizing enlightenment which you achive through the aformentioned aspects, the knowledge of an intelligent force designing what is.
Its also usually, when held by a person, held at the height of the head making me think thats another hint towards its relation to the head/brain.
Also it was mentioned that pinetrees are green the entire year and thus could be a symbol of immortallity like the immortal conciousness/soul
Buddhists believe reincarnation takes 49 days which happens to be the same amount of time the pineal gland takes to develop and become visible after conception. The Pineal Gland very well may be the seat of the soul, or a reciever for the soul.
So bucket=knowledge and information
Pinecone=wisdom, enlightenment and understanding, as well as possibly spirituallity and the soul