The best materials for a pedestal cake plate with dome will be versatile and functional at the same time. While cake plates come in various materials such as plastic, glass, and acrylic, your decision will boil down to aesthetics and your personal preference.
Glass stands are extremely versatile and transparent, so they fit in with most themes. They are also easy to care for and maintain but prone to breakage if dropped even once. Acrylic stands, on the other hand, are durable and unique. The bonus is that, like glass, they also clean up easily and don't require much maintenance.
If you want the look of a glass pedestal cake plate with dome and the safety of plastic, then acrylic is your best bet. They are also better for display, while glass cake stands are much better for cutting on due to their weight.