It's kind of an odd thing to do with your Friday nights, but this is what I started doing, and I started collecting a whole group of my friends' DNA in small vials and categorizing them.
金曜の夜にやるには ヘンなことかもしれませんが とにかくスタートして 友達のDNAを チューブに入れて集め 分類し始めたんです