Funny story about the 6" magnetic dish. I knocked mine off the table at the church hall-----onto a concrete floor. Now, that cup may be magnetic and it may be tough, but when it smacks that concrete flat bottomed, pins fly everywhere.
THANK GOD! I also had the telescoping magnetic wand, so pick up was almost instant. And if not, the bottom-bottom is also VERY magnetic so just passing the holder over the pins helps pick them up.