Hello, time to post some work , little pieces to become confidant , here i going to put renders with basic materials (no dust , or damage or fingerprints, etc).
Rendered in cycles with only a HDRI no lights setup
Ballpoint pens
Marker
Pendrives
Mechanical Pencils
Cutter
Welcome to BA! 
Lots of good practice there! And how appropriate to have pens as your first Sketchbook entry. 
I featured you on BlenderNation, have a great weekend!
Whoa , I didn´t expect this …Thank you very much!
Procedural material terrain done following a substance designer tutorial in youtube, trying to see if i can do it with the blender nodes what its done in designer, the idea was to see and understand how and why it´s done each part of the material and try to apply in blender.
Too much trial and error until i reach this :
