bshep20 is right. It's the ashtray holder. The ash cup is too small for the cupholder, so they divised that little contraption to keep the thing from sliding all over the place. It's just another piece for you to either loose or waste money on, as it's just one more part for the car. I don't even smoke and my car came with one. I use it to hold any spare change for the drive-thru.
'05 Base Coupe, Blue, 2.2L, 5 speed manual, Too many mods to list in this signature. I'll just say insanely loud system, fully upgraded suspension (nothing original), Intake, Full Exhaust from the engine back, Rims, Tires, etc... Give me about a month to get back stateside and pics will be posted in the vBGarage.