Toss together quick project sketches with these transparent sticky sheets which hold in place when you need them to. They won’t leave a residue or damage your drawings either. Each pack comes with 30 each of square, protractor, and ruler designs.
When black lead isn’t enough, these Pilot Color Eno pencils will add an erasable splash of color to your drawings, with the precision of a 0.7mm mechanical line. Sold as a set of eight colors, including non-photo blue. Additional colored lead refills available here.