Suction Trivet

From the website:
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Silicone Suction Trivet

Put a heat-resistant layer between hot pots and fine surfaces with this ingenious Silicone Trivet.

Suction design plus embedded magnets hold trivet tight to most metal, ceramic, glass and plastic pot bottoms as you carry them to the table.

Loop handles allow easy detaching and handy hanging.

8½''Diam. including tabs.

Heat-resistant to 600°F.

Dishwasher-safe.
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Tell you what — if I were still featuring those "What Is It?" mystery objects, this one would've made the cut.

$9.99.