The present invention includes both the device and the method for utilizing two wedge shaped halves to retract a stud used to deform rivet nut material, thereby setting the rivet nut. The lid characteristically includes: a dome portion 16 with a top wall 24 and a sidewall 26; a flange portion 28 extending outwardly away from a lower portion of the sidewall; and a tab portion 30 extending outwardly from the flange. In one embodiment, the apparatus is an add-on to an existing slot machine permitting it to accommodate both money and gaming chips.