Here's what we looked at this week:Luxury screwdriver, anyone? Arrowmax's designey hand tools. The Brabus Big Boy 1200, a luxury motorhome, is vanlife for the 1%.The Bikerguard: a windshield wiper for motorcycle helmet visors.Silence Corner's versatile Mambapod is a mini tripod with an F-style clamp in one leg.A genetically-engineered spider silk scarf, by industrial designer Sruli Recht.Nice design touches in Cathay-Pacific's Premium Economy seats, upgraded by design firm JPA.A compact rearview mirror for bikes, hidden in the handle.Formlabs held their annual 3D printing user conference.Industrial design case study: Nike's accessible backpack, originally designed for Paralympians.This week Otherlab unveiled Lightfoot, a solar-powered scooter.Steelcase and Logitech's Ocular View videoconferencing solution.Furniture design history: Willy Guhl's Loop chair. What the Eameses did with plywood, Guhl did with fiber cement.Kingspan's Microhome design competition.Industrial design case study: This Sherman bag, designed by StudioFAR, is a backpack for carrying odd-shaped items.