Another option that would used risograph printing that would be ideal for Birchbox would be making images of objects. I was thinking makeup items as this would really reflect what Birchbox is about in a funky design.
Japanese Poster: Pottery and Life. Ryotaro Sasame / Sprout. 2013
Dock 57 created these cool Scandinavian line illustrations. They featuring some of the regions characteristics, such as cabins, vikings, Icelandic geysers and volcanos, reindeers etc. The illustrations where made for the Scandinavia club in Moscow.