If you don't want folks messing with your stuff, then you had better keep it CONFINED to a safe place.
This is an illustration I completed recently. I tried to loosen up a bit by drawing with a pencil (a REAL pencil) and then coloring it with a brush in Photoshop. I usually dump in color with the paint bucket, but on this one I used the old Wacom tablet and painted it in. I think it worked out OK.