I don't remember what the first one was but I do remember the most difficult one. He was about 6 or 7 yrs old. As I was putting the M &M s in in his bag, he announced that he hates M & Ms so I offered Skittles. He hates those too. then I offered 3 Musketeers but he didn't like that either. That is when I gave up.
His mother kept telling him to be nice and say thank you. Oh well, his loss.