I found this around the house. I was wondering if this bowl would be usable as a reflector or should I continue searching. This seems to be the hardest item to find .

That looks like it has a rather large flat spot which may be a problem. I know the reflection thread is painful.

This thread was started as way to keep track of actual atlernatives, like brands of bowls and links to sites that have them. Of course, like everything else it got slightly off track, but there are many solid options in there.