I think we've just done terms as we've encountered them in reading. I guess I'm lucky that all my kids have all had fun over the years looking at atlases and stuff, I think we've picked up most of it that way.
I didn't realize that the Book of Marvels has increased in price--we didn't spend more than $12 or so for ours but that was years ago. I'd send you mine but I have one more kid who hasn't read it yet!
If there are any books you've missed from the younger years those would be a good place to start. I've read everything on the AO list except the one on the Year 11 Lite list, I think. They're all good but I don't know if there was a specific area you wanted to do. There is a wonderful book called Book Lust to Go by Nancy Pearl that has tons of suggestions for different countries and areas of the world. These are NOT all vetted by homeschool moms to be child-friendly but I've read many and researched many, many of the books and could probably help if you had questions about a few of the titles.
Here are some easy online resources I have:
A Map Skills Unit Study from Soli Deo Gloria (available on CurrClick)
Two HLN thematic units, Geography Part I and Geography Part II, that have many useful links and things (also CurrClick)
And a very cool unit called GlobalMania that I got from Terri Johnson, I think for signing up for her mailing list. It has tons of very, very useful game links that my kids all loved. I just checked--it's still available on her site, knowledgequestmaps.com, go to Catalog and Freebies and you can sign up and get it.
I think I got all of the above items free, although I don't know if CurrClick still has them for free or not--they might have been promotions that I got them at.
For specific geography term items, try googling "homeschool geography terms"--lots of interesting looking things come up.
Let's see, let me know if there is still a good area you'd like me to take up. Do you do anything for current events with your kids? We get tons of geography work done with that--I make someone show me where the country being reported about is, then tell me what kind of people live there, sometimes we have little games to see who knows the most. Capital? Currency? Languages spoken? Religion? Terrain and climate?
One REALLY FUN thing we did once for geography--we bought cheap unit lots of world stamps and world coins. I developed a simple page, and then we identified each, filled out a page on each one, made a big notebook--it was so much fun! To be honest, I think it's possible to get a lot more geography knowledge from stuff like that than from a book!