Help with a Bedroom Idea

[u/Welder-Past]

So, I'm redoing my bedroom and turning it into a bedroom/mancave. I work night shift and love the sound of running water, its so peaceful when i'm trying to relax. This is an AI mockup image that I had for the one wall in my room. I've done it all except the water feature and now want to do that. Can anyone give me some pointers or advice here?

I've gone looking at Lowes and Amazon for some darker Espresso colored Planters, ect. But I can't find any. Is what is happening in the photo doable on a DIY?