Purple Pumpkin run a monthly free entry competition with a small cash prize. Even if you don't wish to enter, you may find them useful as story prompts.
Yes, I know these are artichokes but ...
1. Purple pumpkins don't exist so are tricky to photograph.
2. I wasn't sure I'd find anywhere more suitable to sneak in this picture.
3. Purple artichokes isn't alliterative and I like a bit of alliteration.