Anyone know of where you can buy like 10mm rubber plugs at? Any other suggestions of what to use? I dont want to get a new trunk or fill them permanantly because i want the option to put it back on for resale purposes.

 

Go to the fasteners aisle of HomeDepot/Lowes. They're usually in the pull out drawers.

 

I picked up some interior carpet plugs from Auto Zone and put a little silicone around them before installing.

 

colored electrical tape works wonders. Pick a color close to your cars.