On the left side of the page, list tangible nouns: house, garden, train, truck, tree…
On the right side of the page, list abstract/ intangible nouns: trust, peace, misery, dreams…
Now combine them in a phrase like this: A ____ of ______.
Play around, create interesting phrases and some new cliches. Some will be silly, some will be obscure and some may turn out to have a lot of power in just four words.