I USE CARDBOARD THAT I FIND ON THE STREET FOR MY DRAWINGS. SOME TIMES I DO A COUPLE OF DRAWINGS ON ONE DAY. OR IF I WAIT FOR DEVELOPED ROLLS OF FILM TO RETURN OR THE WEATHER IS HORRIBLETO GO OUTSIDE TO MAKE PICTURES. IF YOU WANT TO SEE MORE GO TO MY WEBSITE :http://www.marjanbuning.com/Taken by marjanbuning. This photo can also be found in the album DRAWINGS.