I needed a stand to hold one of these light bars and couldn't find one. I modeled this to suit my needs. It prints in two parts and a standard ¼ 20 bolt and nut holds it together. The height is adjustable. I put a few holes in to accommodate different size plants.
I've included the Fusion 360 file in case anyone needs to make an adjustment.
The author marked this model as their own original creation.