Whipped Cream Rings

Back to the oh-so-delicious-but-inedible food jewelry trend =]

Whipped cream: silicone bath and kitchen caulk. Just squeeze it out onto wax paper through an icing tip, embellish with jewels or fruit, and let it sit for 24 - 48 hours (depending how thick). 
Also works great for "icing" polymer clay cakes, as in the last photo.
The ring in the second photo was made by rolling wax paper around the finger and then squeezing caulk around that.
Happy crafting!