These are my felt stack oil diffusers. I up cycled tealight holders to hold a stack of felt circles. The circles were cut 1.5 inches in diameter and stacked until they filled the cavity of the holder.
I believe this one has 10 layers of royal purple felt. I added a silver flower accent topped with a 12mm crystal glass faceted bead. The purple thread runs from the bottom through the accents then back down to the bottom of the felt stack where it was securely tied. The heavy glass holder ensures that oil drops don't damage the surface the diffuser sits on.