Smart lighting changes your daily routine by letting you set schedules and mood lighting from your phone. You can usually install a basic bridge-based system throughout an entire home in a single afternoon.
The best time to buy is during major retail holidays, like Black Friday or Prime Day, when companies put their multi-packs on sale. Keep an eye on your favorite brands in the months leading up to these sales to track the lowest prices.
Remember that the 0% period is a deadline, not a gift. If you have any balance remaining after the 18 months are up, you will start paying interest on whatever is left.