Lee John Phillips 'The Shed Project'

"..artist Lee John Phillips has undertaken a project of epic proportions to celebrate the memory of his late grandfather. Phillips estimates that it will take him about 4-5 years to draw all 100,000+ items left behind in the shed by his grandfather, who passed away roughly 20 years ago... Phillips has been numbering each object in his meticulous project, and has drawn nearly 4,000 at this point."
(from Bored Panda)

more information here.