London-based startup Arroe has created a laptop sleeve called 'LAER' that can be used to charge a laptop, smartphone, and tablet at the same time. The bluetooth-enabled cover features DC charging, MagSafe for MacBooks, USB-C, USB Quick Charge, and a wireless charging pad. Arroe is offering 5,000 mAh and 20,000 mAh versions of the sleeve starting at about ₹6,400.