Secretly recording my husband?

I’ve never had so much trouble finding ideas on google before! I’ve recently gotten my positive pregnancy test and have set up a surprise for my husband. I really want to tape him finding it, but cannot come up with any ideas to hide a camera. Every idea I have I’m sure he’d notice, and if he sees the camera or me holding it the entire thing will be given away.

I thought about doing it in public and having a friend record it, but a few weeks ago he randomly asked me to make sure if we ever have a baby I don’t tell him in front of anyone else. So that eliminates that.

Does anyone have any ideas? I’d really appreciate it.