Bent flint,
The sticky things are cut up section of post it's. They stay in place long enough to get the photo but don't pull up any finish when you take them off.
Rob,
I am glad your finding this stuff helpful. I have always been a detail kind of guy and always want to know more about how things were done or see how they work. Some folks start to get that deer in the headlight look in their eyes when I get started talking details.