If New York designer David Kirshoff's bright, blobby lamps and chairs have an element of the grotesque to them, to some degree it was fated: “I was raised around a shop that makes special effects for movies and TV, where my brother and I used to hide out and coat each other with fake blood,” says the 25-year-old Pratt grad. “I’ve been welding and machining, blowing things up, setting things on fire, and most importantly, making things with my hands since I was a little kid. That’s how I…