You could pocket £450 by sending your unwanted gadgets to O2. Yes, that’s the average value of unused devices found forgotten in UK households, according to research by Virgin Media O2. With the Christmas shopping season fast approaching, the extra cash could really come in handy — making it the perfect time to transform these unloved gadgets into cash via the O2 Recycle scheme. O2 Recycle, which is open to anyone — not just those who hold a phone or SIM contract with the brand — accepts a swathe of devices, including smartphones, tablets, wearables, earbuds, laptops, and gaming consoles. The …