Spencer Silver Reference Libraries
The Post-it note is a piece of stationery designed for temporarily attaching notes to documents and other surfaces through the use of a strip of adhesive on the back. They are most commonly seen in a 3-inch square and yellow in color although they can come in a variety of shapes, colors, and sizes. A low-tack adhesive allows the notes to be stuck and removed quickly with no residue left behind....
- A handkerchief.
- In general, any miraculous portrait of Christ.