A portable ultra short throw laser projector replaces a bulky living room television and travels easily for backyard movie nights. Quality units run for years before the light source dims, so you want to buy the right hardware once rather than upgrading twice.
The best time to buy is late February right after the big electronics trade shows wrap up. Brands announce their newest models, which immediately knocks hundreds off last year's perfectly capable inventory.
Keep in mind that 0% interest is an intro window, not free money. If you have any balance remaining after those 18 months, Citi will charge you the card's regular variable APR on whatever is left, so treat that 18-month mark as a hard deadline.