The moment I am still impressed from what I saw on Mr.Frivolous portfolio. His simple, hence striking, portraits created by using only pencils and felt-tip pens and seems he spends an overnight to create each piece. The speed of drawing, techniques, drafts and later original prints, creates the unique atmosphere while surfing his Flickr account. It is enjoyable.
A collection of pencil drawings London based illustrator Rupert Smissen time to time working in collaboration with Rebecca Pomroy. Obsessive with details, double-meanings and beautiful shadows Rupert's works are yet not provoked the industry to step out from Tumblr, I bet this is a matter of time and good illustration agency.
All over the world office procrastinators must be jealous after exploring the unique art made by Gregory Euclide on whiteboards with a single black marker and some water. Definitely there is no limit for an artist in materials if he really wants to express himself.
Caitlin Hackett’s artwork analyzes the boundaries that separate humans from animals. “[...] these boundaries are warped by new scientific data, mythology, history and religious beliefs alike, blurring the lines between us as science, religion and culture clash over what it is to be human, and thus, what separates us from the beasts of the wild,” states Hackett.
Anthony Caseiro is French illustrator based in Madrid. His works are outstanding and I bet requires a huge painstaking job along with an artistic talent. Check his full set of "Blue Bic pen on paper" on Behance or personal Tumblr