This 3-in-1 charging cable has two Lightning connectors and one magnetic Apple Watch charger, and a two-pack is on sale for $34.99 right now (reg. $69). This iOS compatible cable is about 4′ long and splits into the three connectors toward the end. It’s made from ABS plastic and aluminum alloy with over-current, over-heat, and short-circuit protection. The Lightning connectors are compatible with all Lightning devices including iPhones and iPads, and the Apple Watch charger is compatible with any Apple Watch, though it’ll charge more slowly when all three devices are connected at the same time. Note that an AC adapter isn’t included, though.
You can get a two-pack of these 3-in-1 charging cables on sale for $34.99 right now, though prices can change at any time.