Do any of you know were I can get some little rubber or similar pads to go between the table frame and the glass top? We have a table in the office here that has some pads that have a small "spigot" on the bottom that fits into a small hole in the table frame and then has what looks like one of those "stick on the bathroom tile" sort of arrangements that the glass sits on, stopping the glass sliding while still making it removable.
Like this
Like this