Using a hot glue gun, attach the piece of the right side of the fabric to the long side of the tin with the edge facing the top of the tin.
Fold over fabric to cover the top with the desired look.
Fold over side edges and attach to the sides of the tin with hot glue.
Fill compartment between tin top and fabric with polyester filling.
Use hold glue to seal fabric over the top of the tin.
Braid a cord from the embroidery thread.
Attach cord to the edge of the fabric on the tin top.
Attach adhesive magnets to the inside top of the tin.
Use hot glue gun to cover the magnets with a piece of fabric.
Just cardboard into desired insert shape (use hot glue to attach pieces).
Cover cardboard insert with fabric as desired.