I've identified a recurring viewer question about the "clear stands not included" that I occasionally use when displaying sets in reviews. For the most part I just use regular LEGO parts that are available in sets. From Bricklink's color list you can filter by trans-clear, though decorated and old frosted parts also show up, so the real list of good potential candidates is much smaller. I've put together a quick video showing the easy-to-obtain, regular parts that I use most frequently, including more than shown above.
Update: Link fixed.