BIC's M10 Clic ballpoint pens have a transparent chamber so that the ink level can be easily seen at any time. They also have a handy push-button at the top. Quick-drying ink means no smudges too!
We advise you to take the 123ink version of these pens.
Edding 140S OHP blue marker.
Overhead projector marker, permanent, smudge-resistant, water-resistant for transparent plastic films, glass and plastic. Rounded tip that makes a 0.3mm wide mark.