You can find 9-10" SVGA/VGA CRTs with a bit of effort on Ebay.
Monitors in this size while often used in POS (Point of Sale) systems are harder to find but they are out there.
I have a couple of this size remaining from previous acquisitions destined for bartop mini cab projects.
Best of luck with your project. I will keep an eye out for ya and post here or PM if I locate an extra one.