This is a Gath helmet covered with mirrored acrylic squares 1/4"x1/4" cut on a laser cutter. Glued with some glue that works really well It is clear and flexible. i think it is a urethane glue.
Step 2: Cut lots of mirrored pieces.
so i used mirrored acrylic.
1/4inch pieces square are great, but i guess you can use any mosaic pattern you wish.
Step 3: Glue them on
a year of use and i've only lost a handful of mirrors.