This works deals with the plasma surface treatment of various materials. The treatment was carried out using cold atmospheric plasma (volume DBD). The treatment was units of seconds long and the working conditions were as follows: frequency 3 kHz, discharge voltage 20 kV, electrode distance 5 mm. The treated materials were either powder materials (grass seeds, polyethylene powder), either bulk materials (polycarbonate sheets) or porous materials (polypropylene nonwoven fabrics, polycaprolactone microfibers and polyurethane nanofibers). The treatment resulted in significant changes of all of the tested materials.