This is my first thing i ever created. I wanted the Sony tv (a KD-49X8505B) to have a bit more space under the tv to put a speaker in front or a ps4 below the tv with the standard legs.

The OpenSCAD file is somehow parametrizable - you should easily change the height or the length of the riser. I rotated the object to print without supports.

You have to print 4 of these - i used 30% infill for PLA to be strong enough - for me they worked great.