Perhaps you can have some custom made by Sound Anchors...
The stands I use are perfect for Zero's! I use American Speaker Stands with a 5x5 plate on top. These slope back or foreward, have sand/lead fill bass, adjustable spikes, steel construction, and are found in many audiophile shops.
I'm actually selling my pair for other needs also.
However, how tall is your ceiling height? Also, how far away from walls are you planning?
Just for feedback's sake, zero's need boundary reinforcement ideally! Yes, ideally you'd like balance of frequency response out in the room/ But the Zero's really start rolling off at about 120-100hz! placing them near walls helps the response down to close at 80hz range for better balance and blend. Just for feedback.
Also, and equally as important is ceiling height! if you have a standard 8' ceiling height, may I recommend 24" stands!?..even angled up a bit if need be. I've found higher hights to be not so effective with low ceilings. Basically the speakers couple better down lower mostly for minimonitors. But, you might tinker.
Anyway, I have a 24" pair, and have used numberous monitors on them for superb sound!