My boyfriend is totally into chemistry physics and science so this card would be perfect for him! This card would also work for a girl who has the same interests as my boyfriend, you don't want to give this card to someone who doesn't enjoy it!
I love you clothes pins: Write a message with a FINE POINT sharpie so it doesn't smear. Write "I love you" on a paper. Cut it out, and hot glue it to the clothes pin end. Would be cute for a care package!