HiFi Furniture

This is what I use....
https://m.kohls.com/product/prd-3287623/inkivy-zen-sideboard-storage-cabinet.jsp

It has enough space inside for my source components, with the bottom shelf reserved for my amp. It has worked well, is heavy, and looks nice. I think it looks better than lots of what I've seen sold as audio furniture, plus I like the fact that I can keep dust out with the sliding doors. It is also very deep, a tad over 18 inches. 

What's your budget? We all have different ideas of what "expensive" is.

Have you looked at the modular stands on Audio Advisor?  How much shelf isolation do you require?

OP, I sympathize. I was looking into furniture last year when it hit me that I really wasn't sure where my gear would be most optimally set up. More than a couple people emphasized that it's a good idea to keep gear outside your soundstage -- so all those racks between the speakers? No good. Ok, well then where should the gear go? And how does that change the length of the cables involved? Hmmm. I had already invested in some nice cables and wasn't going to get rid of them so I could buy some furniture.

My solution, so far, has been to set my gear very low to the ground, between the speakers, so that the soundstage is largely open above, say 1.5 feet high. This allows all cables to reach gear and speakers.

If I had planned things out differently,  I would likely try to have the gear off, to one side, with my mono blocks behind each speaker and a long interconnect between the preamp and the amp. But I don't want to spend on a long, good IC right now.

OP,

Here are some choices for you. Keep in mind, a well built audio rack will last you a lifetime. 
https://www.classaaudio.com.au/45-audio-racks-and-stands?order=product.price.asc