Having a costume party, & the theme is ALL AROUND THE WORLD, I need creative ideas for name, invite, & drinks?

Im serving drinks from around the world, such as saki bombs, jager (Germany), tequila shots and margaritas, Beer (of course from America), Irish car bombs, wine... any more ideas. I also need creative/catchy ideas for my invitation, like a poem, joke, or something witty. My roommates are dressing up in costumes from Russia (tall furry hat & red jacket & tall boots), Cuba (mariachi like costume), Eskimo, and a Kimono for Japan... anymore ideas for guys and girls???