You can do things with trains, planes, boats, hot air balloons etc
(The ABCs around the top of my whiteboard are on train cars, the students' attendance is on hot air balloons which float to 2 separate clouds. ETC)
You can do things with various countries and continents, geographical formations (mountains, volcanoes, etc) or maps
(I have students grouped into six tables which are labeled by continents and my guided reading table is antarctica
. My whole group rug is a map of the world, I have a bench mod-podged with maps, which someone made for me as a gift - etc)
You can do things having to do with various cultures and languages too! I have a poster above my library that says hello in like 30 different languages.
When you learn about various topics, the students can be travelers or explorers - this really fits into science and social studies, but can lend itself to language and math too!