How do I flip the glovebox forward on a Scion tC to get to the cabin filter

First you need to push in the sides of the glove compartment. Open it up, and on the left side first, apply mild pressure to middle. You should see the clip coming out. Do the same on the right side.

Next, there is a button hinge near the bottom right.

You're all set! Pull out the tray and save yourself some money for mods ;)

If you want, you can check the pictures in the scionlife thread l linked to.