I'll probably get dinged on this for my lack of creativity, but I take individual sentences around the area which I want to fix or expand and put them in Google. Then, I look at the results and see what piques my interest. I don't use someone else's words directly, but just use it for getting additional ideas. For instance, just now, I Googled the following line from my story ...
"During their labour, the workers encountered a hard spot in the limestone"
... and came up with these ideas which I added to various locations in my story:
(a) The appearance reminded me of a crypt.
(b) ... such as might be expected to occur occasionally during excavations.
(c) ... and suspended operations ...
(d) Changed "hole" to "cavity" because it sounded better.
Of course, as you go further into the Google pages, the results diverge drastically from your original text. You have to decide how far to go - sometimes, this might be a good thing.
This suggestion is from a first-time writer, but it could be something to stimulate creativity, get you out of a slump or inspire a similar idea for your story.