Polished buttons

Polished buttons are from pickpocketing HAM members and then polished. They are also found in the Level-3 dig site east of Varrock as an occasional discovery. They are used in the Animal Magnetism quest.

Although these are found in members parts only it is unusual to polish them in a F2P world.

Use in arbitrage scam
Players would sometimes trick other players, usually non-members, into thinking the item was rare, and other players would sometimes pay up to 100 000 coins for them. Because of this, Jagex made them untradeable in the 20 November 2007 update.