This grouping illustrates the rule of three as spoken of in the book, and also the use of a riser for height and a tray for corralling. In addition, it brings in a touch of metallic.
The three items you choose don't have to be identical or even match. Here, we have a lamp, a charger plate, and a fragrance diffuser creating our grouping.
Another take on the idea from above, this time with two light sources, a metallic charger, and a colorful mat.