Dh was following a woman through security and she was told she had "too many" items in her baggie. She claimed there was nothing in the rules that said how many items could be included. He said "too bad" and proceeded to chuck them (including some expensive make up according to dh) in the trash.
That's a clear example (as far I understand it) of that TSA employee making up his/her own rules. As far as I understand it, as long as it is a quart sized bag, you can take as many 3 oz items as will fit in that single bag.
After the scissor rule was revoked, I had a TSA person confiscate a small pair of cuticle scissors at Kahalui, Maui. I didn't argue or ask for a supervisor that time either.
I've also given up on the shoe rule. I just always take them off now, even though I travel with black sneaker-like rubber/leather shoes.
In LAX, a screener decided I had to have secondary screening, because another TSA agent bent and broke my license. It was still in one piece, but had a crack the length of the license so it could bend. After that trip, I found out I could order a FL replacement license online for $10 and have it reflect my HI address and sent to my HI address, which makes for fun conversation when people assume I live in FL because of my FL license.
-David