Brefreeze A/C Vent Clip-on Replace-able Air Freshener

A friend needed a cheaper method for using her febreeze inserts and didn't feel like paying for a new unit every time she wanted to change her car air freshener. Found this hinged thingy for filament oiler by idig3d, change the dimentions and used a piece, A/C vent legs from cahorton https://www.thingiverse.com/thing:3039699 (mad props) reshaped the box into a square and filled in / opened up as appropriate for the design.