DIY Home Decorating: 2 layers of thick cardboard (for examples: boxes) and for embellish I covered with fabric. I put hooks for jewelry. Because jewelery is very light, hooks hold well on cardboard. For more strength, cork sheet would be an option. My frames are old mirrors.
These travertine tiles naturally absorb moisture and make perfect coasters. We use waterproof ink to create the images on the coasters. Cork sheets are precisely cut and glued onto the back of the coasters for support. They are naturally rustic, natural, and look great on any coffee table.
I just finished creating my dart board wall protection with wine bottle corks. Using a sheet of styrofoam, my husband cut it to the appropriate size and cut out the centre for the dart board. I used a hot glue gun to glue the corks to the styrofoam. I then used Welbond glue to ensure the corks stayed attached.