I like to turn to the surrealists for inspiration. The poems I write may not always eventually be surreal, but reading the surrealists and using surreal techniques can lead the way towards writing something true and fresh.
“The word ``surrealism'' having thereupon become descriptive of the generalizable undertaking to which we had devoted ourselves, I thought it indispensable, in 1924, to define this word once and for all: SURREALISM, n. Pure psychic automatism, by which it is intended to express, verbally, in writing, or by other means, the real process of thought. Thought's dictation, in the absence of all control exercised by the reason and outside all aesthetic or moral preoccupations.” Andre Breton.
Some favourites of mine below and suggested reading: