All ready to send, and my crafts fit into a standard envelope so I can't put tracking on it. :/
If you are sending in the US, you can use certified mail with no return receipt/signature required, which gives you a tracking number. It's only a couple of bucks.
Huh, I wish I had known that before. I was told I couldn't by the postmaster of one post office, though he's a jerk anyway and I don't go there anymore.
I will know for next time, though!