Looking at the photos can give you places, characters, actions, and moods. If you don't feel inspired by what you see, click again to get new photos.
When I tried it, I got a little girl picking up a turtle in a garden. That could be the start of a story. Just ask yourself, "What happened after that?"
I also got a backpack on a kayak. That could also be the start of a story. Just ask yourself, "Who does that backpack belong to? Why is that person in the kayak? Who else is there? What's their relationship? What kind of conflict could evolve on their adventure?"
Clicking "more" gave me a wistful bride looking out a window and a race car. Put the two together, and you can probably come up with a great story. Maybe the bride is giving up racing. Maybe she wants to race away. Maybe she's marrying a race car driver, and maybe he was killed in an accident on the way to the wedding.
Give it a try. It's a lot of fun, and you never know what you're going to come up with.
Here are some random photos of mine to get you started.
Have fun writing!