Ralph Nader has a problem. After using his beloved Paper Mate Flair felt-tipped pens for more than 30 years, Nader noticed a change: His pens have been drying out faster than ever. He reached out ...

Pens! They just might be the cheapest ... L-R: old Zebra Sarasa, orange and green Pentel Energel Xs, Paper♥Mate InkJoy gel, another old Zebra, Pilot G-2 bold, old Zebra #3, Bic Gelocity ...

The duo who call themselves DFT draw familiar objects like trainers, animals, and hands – while never taking their pens off the paper. The artists can spend months conceptualising a single project.