(1) An empty container may be a sexual symbol, representing the womb, or woman.
(2) What is empty in the dream may be something that symbolizes the self - a room, for example, or house. In that case, it may represent your own (feeling of) emptiness. According to Freud, when a person suppresses or represses something, it often happens that nothing else comes to take the place of what has been suppressed / repressed, and the consequence is that the person’s life becomes empty. (For suppression / repression)
(3) Emptiness, an empty landscape or an empty container, may be a symbol of potentiality: where there is nothing, there is room for anything. The unconscious is sometimes visualized as an empty container, but — again — as containing the potential for all future personal growth.... emptiness / empty dream meaning
In a dream,a spool means keeping one’s secrets, or it could represent a gracious man, or a trustworthy person who lends his help to others and benefits them in their worldly affairs.
If one sees himself carrying a spool while taking his ritual ablution in a dream, it means that he will seek the help of a righteous believer who holds fast to the rope of God Almighty. In that sense, a spool represents the element of religious life and the rope in a dream signifies religion, which is one’s connection to his Lord. Carrying a spool when performing one’s ablution in a dream means that one will be permanently cured from ills and become free from debts.
A spool in a dream also means an active servant, or a talkative son.
(Also see Ball of thread; Rope)... spool dream meaning