Being the one who made the bread. I did that a few weeks ago- no one ever tells you that at least the first time, you spend half the service hoping desperately the bread won't have gone hard or something and you'll be the reason why the minister can't break the bread and it'll be your fault this sacred ritual is ruined. LOL. It turned out fine, but I was really nervous.
I haven't been to a church in awhile that had those plates with the thimbles and the little wafers, but I do remember thinking they were heavy at one point and wondering what happens if you drop it. Communion is a lot of pressure sometimes!