My colored pencil of choice is the Prismacolor colored pencil. These artists' quality pencils are from the Prismacolor Premiere line of products. They have a wonderful buttery smooth feel when applying them to paper and they are easy to pack for travel sketching.
The Prismacolor web site has some great advice for their care and for proper sharpening when using their product.
Paper Mate’s Clearpoint mechanical pencil in the 0.5mm point size is my favorite mechanical pencil. These writing and sketching instruments are durable, refillable, retractable, have a convenient side advance and a white vinyl twist up eraser.
I have been using these for years and have a hard time passing them up in stores. I always try to have one or two in my bag of tricks.
My sketching pen of choice is the German made Faber-Castell Pitt Artist Pen in the superfine nib size. This durable pen is full of acid-free India ink that is archival, waterproof, smudge-proof (when dry and it dries quickly) and lightfast.
The superfine nib comes in four colors, black, grey, sepia and sanguine. It is perfect for sketching and writing on paper of all types.
My sketchbook of choice is the Moleskine brand. I am enamored with the look, the feel, the size and the way it handles with my favorite media. I have over a dozen “moles” of varying types and sizes, but most often use the large format (5.25 x 8.25 inches). Quite a few of my books are full while others are in progress.
I use a single sticker on the front cover to distinguish one book from another book. I pick up stickers when I am traveling for this purpose. The two moles here are from 2006 and 2007. The fish bone sticker is from the Trout Tree restaurant in Kenya. The Zion Utah sticker is from a trip to Zion National Park.