The cell structure, also known as voroni structure, gives a beautiful, natural design for a trivet.
My build was done on a desktop cnc-machine by Stepcraft from 6mm birch plywood using a spiral-toothed 1.2 mm flute. I used a dark veneer on the topside.
A laser cutter might be a good alternative tool to create one like this.
Visit https://www.zenziwerken.de/en/Household-Items/Trivets for more interesting trivet designs.