Try buying a copy of The Writer's Treasury of Ideas, by Linda Lewis. My copy arrived the other day and it looks to be packed with great ideas to kick start a few stories. And I absolutely LOVE the cover. (Bit blurry here because I've had to blow up a tiny image. Looks much better on the actual book!) Link above is to Amazon. If you buy direct from Linda she'll throw in a mini-guide for free. Tell her I sent you.
Linda, aka Catherine Howard, is a regular contributor to the womags. Her stories are always vibrant and fun, and she's sold hundreds. This will be an excellent addition to your writer's bookshelf.
If you've got a Kindle, it's available as an ebook too (and cheaper that way). Also check out Linda's How to books for Kindle:
How to Make £10 in 10 Minutes
Why Short Stories Get Rejected
which cost next to nothing and are brilliant.