2013 cargo area cutout cover

[jblawrence25]

I just purchased a new (to me) 2013 4runner with 116K miles and i am stoked. I am a 4runner fan and have been for years and built a 2006 years ago. On my 2013 in the rear cargo area on the passenger side there is that cutout with a shelf for storage that has no cover, does anyone know if someone has made a cover so I can put stuff in there that wont fall out while driving and bounce around?
Thank you in advance.

 

[Bossman]

Should be some tips in this thread.

Cargo Area Side Storage Use