Piano refreshments problem?

Ok, I tried the car cupholder thing & it didn't work, so Im going to try putting my Diet Cokes in a beer cozy, which I will screw into a piece of scrap aluminum that will fit in the slot above my F# to A# on the lowest octave of the piano. The aluminum will be kept in place by an 8 barbed hook I will make out of fishing tackle. My question is, are there any thin strings I could break in there?