I want to make a custom cubby to fit in the slot between my radio and ashtray on my X7. I have the version with the lid, but I don't want to destroy it because a replacement would set me back some 40 quid. I just want to get my hands on the white clip things like in the image below so that I have a way of mounting any custom designs. The problem is that I don't know what the part number is or what to specifically search for because any query with 'clips' in it returns a bunch of those screw/rivet-like ones seen on the headlight cowling under the bonnet.

Thanks