Spooky plates are made from a variety of materials, including paper, dolomite, melamine, ceramic, and earthenware.
Many disposable spooky paper plates are described as heavy-duty; for example, some listings specify 450gsm paper and note the plates are designed not to easily break or fold.
Dinner plates are commonly around 10–10.5 inches (examples shown at 10", 10.3", 10.25", 10.5"). Dessert plates are commonly about 8 inches.