General

I wanted a simple and fast test pattern that got to testing the farthest corners of my bed early in the print and then had plenty of time for me to adjust the z offset so that my prints would stick all the way to the edge of my bed. 

I designed the path specific to a .4mm nozzle on my Prusa Mini+ so that the path would require two extrusions so you can get 2 looks at each corner. 

Print Info

Slice it for whatever material you like and make sure you turn off the skirt as the model alone is designed to occupy the entire bed. You can then scale it in the xy to whatever your bed dimensions are for your printer.  I've included stl files pre-sized for the Prusa Mini, MK2/3/4 and Ender 3's but the contents are all the same other than xy scale.