Dreaming about buying colanders may symbolize your efforts to sift through your experiences or emotions in waking life. A colander is used to drain excess water, which could represent your desire to remove unnecessary thoughts or feelings that weigh you down.
The fact that you bought two different sets from two different people may indicate that you are seeking different perspectives or solutions in your life. It could suggest a need to balance or compare different aspects of your life, perhaps in terms of relationships or choices you are making.
Consider reflecting on any current situations where you feel overwhelmed or uncertain. The dream may be prompting you to take a closer look at what you truly need and what you can let go of.