The Adafruit MONSTER M4SK's screens are perfect for adding animated eyeballs to your costume mask. With some simple additions made from craft supplies, we can make the M4SK comfortable to wear and allow you to see your surroundings through the costume mask's eye holes.

2x Convex Lenses


Materials
In addition to the parts above you'll need:
- Costume mask (I used this Dollface mask)
- Thin neoprene rubber or foam, such as a soft glasses case, thin mousepad, black craft foam, or a sleep mask
- Two small Velcro strips
- Scissors
- Black permanent marker
Optional:
- Black hose or other thin, stretchy fabric to cover the eye holes from within if your mask doesn't have this feature -- you may need to cut out larger eye holes on a mask such as this clown mask
- Hot glue or contact cement
- Black gaffer's tape