Marvel one-shots

What are some good, standalone one-shots with the following characters:

• Daredevil
• Fantastic Four
• X-Men
• Spider-Man
• Hulk
• Avengers

I mostly read DC but occasionally I’d like to just read a random issue of a Marvel comic with one of these character, without having to keep up with any series or invest in a series (or even miniseries). Just something to keep things fresh whenever I want to dive into the Marvel universe when I feel like it. Just to clarify, something like the TMNT one-shot about Raphael or Action Comics #775 ("What's So Funny About Truth, Justice & the American Way?") is what I'm referring to. Just single issues.