Just saw the seafood limitation! Sorry! I'll think of some more stuff.

Easy Baltimore = Old Bay steamed shrimp.

Steamed crabs are probably a little too much for ya on the technique end, so shrimp will work great! And I agree with everyone else who has mentioned Old Bay wings. If you can find any Old Bay hot sauce, grab it and put it on everything.

EDIT:

Deeper cuts:

As a bonus, if you want some super traditional inner-city Baltimore for your Thanksgiving meal, add some sauerkraut to the spread.

It's unlikely that you'll find any around, but if you can grab any scrapple, it's an old Baltimore (and Philly, and Pittsburgh) staple.

EDIT 2: Live in Baltimore all your life, link to citations for suggestions, get downvoted. Cool. lol