Ceramics
Pottery keep cups are literally made of earth. If they break (don't break them!) they can be placed back into the earth. They will do no harm. The lids are mostly made from silicon - our planet's most abundant element. In theory, and in large amassed quantitiies, this can be recycled. But best, pop the lid on another cup? 🌼 This cup is made by Loveramics...