Spools dream meaning is explained below using 2 different sources. Each interpretation is shown with its source.

Interpretation 1 — Gustavus Hindman Miller

To dream of spools of thread, indicates some long and arduous tasks, but which when completed will meet your most sanguine expectations.

If they are empty, there will be disappointments for you.

Source: Ten Thousand Dream Interpretation Author: Gustavus Hindman Miller

Interpretation 2 — Ella Freeman Sharpe

Spools of thread signify various intricate tasks that harass the dreamer in waking hours. Empty spools denote unsatisfactory results from such tasks.
Source: Psycho Dream Interpretation Author: Ella Freeman Sharpe