Step 1: Looking for ingredients
- 1 Aquarius or Nestea 1L Bottle, the sides are quite rigid and thin.
- 1 Cutter
- 1 Scissors
- 1 Permanent Marker
- 1 Elastic strip (from an old jacket), mine has a locker to adjust it better
- 1 Piece of foam (mine is from isolation foam from the heating system pipes)
- 2 zip ties (got mine from packaging stuff, not in the photo)