Evidently, these are ceramic coasters that look like rather nasty plastic coffee lids. From (the amazing) Jennifer Daniel.
Some things in life are temporary—just use them once and then throw ‘em to the trash. My new coasters for sale at coastermatic celebrate the everyday morning tradition we take for granted—coffee to go. Except, well, made out of stone and meant for keeps.
$30 available at coastermatic
(via Stone Bodega Coffee Coasters - What Would Jennifer Do)