Help boost your Wi-Fi router's signal!
Just cover the inner parabolic area with standard aluminum foil, place directly behind your Wi-Fi's antenna (so that it projects outwards), and you're done. If your Wi-Fi router does not have an antenna, just place it behind in the same way.

Supposedly it amplifies the electromagnetic signals from the transponder to receiver, thus increasing the frequency and reducing wavelength for more speed.

This print measures 5 inches in height, but you can scale up with your editor/slicer if necessary.

I printed mine in PLA w/ .3 layer @ 5% infill.