The tray is big enough for 3 pedals. I use it with Tre-Verb and Echoplex Delay because I needed something to elevate them so I could fiddle with knobs and not hurting my knees and back. Instead of the third pedal, I put little mint box with picks and folded cloth for cleaning the guitar.
You can put a candle, a glass of water/beer, a can of soda/beer, or even a cup of coffee in - yes - the cupholder.
The tray has sturdy build, with enough space to hide your cables from pedals (both long patch cables and power cables). It has adjustable tilt mechanism for any position you can imagine.
I suggest medium heavy (3-5 kg) baseplate and 5/8" poll stand to make sure it doesn't trip over. I used it for over 2 months now and accidentally bumped it with my elbow/sholder/hip and it never fell down.
It's a fun tool that enables you to experiment with your pedals, since they're within reach of your hands.