It depends upon what you mean. A dream is a stream of unconscious ideas in a way. One could also look at Jungian psychology and point to the ideas your conscious mind rejects by projecting onto others as unconscious ones, with the idea being that we refuse to face them in ourselves and so must put them outward.

Maybe we’re using terms in different ways, but in my mind I have subconscious thoughts, ideas, perceptions, emotions, etc. I’m unsure why you would consider that to be an oxymoron?

Unless you’re defining an idea as something that only exists in your conscious awareness?