Last time I flew (in June) from Toronto to Chicago, I had 4 lighters in my purse. They seem to multiply there. Despite the many signs approaching security, no one blinked at them.
Even stranger was the trekking stick I carried. It's metal and the bottom rubber cap snaps off to expose a steel spike (for hiking up soft ground, or so that the stick can be "planted" as a camera mount). Definitely more of a weapon than many of the things on the list. But again, not a blink.
<shrug>
Here's the link to prohibited items by the
TSA