Kilroy can watch over (err, under?) your door with this parametric doorstop. The OpenSCAD file allows you to specify the length and height of the wedge to fit your door properly.
A Kilroy add-on model is also included to add Kilroy to any existing wedge doorstop. Give the width of the wedge (near the top, where Kilroy will be mounted) and one of the following:
Then use a bit of glue to affix Kilroy to the wedge.
Use a Sharpie (or paint?) to carefully color the eyes if desired.
The author marked this model as their own original creation.