Secret compartments, back seat storage, putting junk in one's trunk - this whole thread is a giant "that's what she said" line.
I learned a storage spot from my rodent friends. They had been storing a lot of dog food and Nabisco Shredded Wheat in the air filter box. Why should they be having all that storage. I'm thinking of cleaning it out and using it myself.
For those of us who wear slipover (over 'scrip) sunglasses that won't fit in the storage over the windshield, the space under the CD changer is handy.
Have had my Prius for 10 years and just learned about the center console drawer today in this forum. Thanks! I have even more places to store things.