When you write, you often find yourself digging for information. Sometimes it can be as simple as needing to find a new name for a character or a street name. Other times it’s different types of World War II-era German watercraft. Or course you can use Wikipedia for lots of stuff, but here are a few places I’ve found interesting info for writing.
Writing a spy movie, check out the World Intelligence and Security Agencies website.
Need a name… for a pet, check out this Names website.
A period piece with a specific car, check out ClassicCars.com.