YOU SAID:

i built a friend with 3 pieces of plastic and a pen

INTO JAPANESE

私は3枚のプラスチックとペンで友達を作りました

BACK INTO ENGLISH

I made friends with 3 plastic and pen

INTO JAPANESE

私は3つのプラスチックとペンで友達を作りました

BACK INTO ENGLISH

I made friends with 3 plastics and pen

INTO JAPANESE

私は3つのプラスチックとペンで友達を作りました

BACK INTO ENGLISH

I made friends with 3 plastics and pen