I highly recommend the World Map shower curtain from Target. At the time I bought it, I cringed a bit at paying $25 for it, but it has definitely been worth it. What makes it better than a wall map is that we can walk, run, jump, hop all over it (especially good for boy learners!).
First, we took our continents cube and rolled it and jumped to the continent on the die.
Later, we read names of countries on the maps and jumped onto them.
We then concentrated on just one continent and tried to learn the names of the countries within them (by of course jumping on them).
Then, we leaped from ocean to ocean.
Lots of learning.
Lots of jumping.
Lots of exercise.
Lots of fun!