A good portable projector turns your backyard or living room into a movie theater for about three to five years. You want a unit with decent battery life and clear brightness so you are not dragging cables outside every single time.
New tech drops every autumn, which means late December and January are the sweet spots to buy. Retailers start clearing out older inventory, giving you a top-tier projector for a fraction of the original price.
Remember that a promotional period is a strict deadline, not free money. If you still have a balance on the card when those 18 months wrap up, standard interest rates kick in on whatever amount remains.