Monoprice offers the Prime Holiday Red and Green Laser Light Projector, model no. 612425, for $31.24. Coupon code "LIGHT20" cuts that to $24.99. With free shipping, that's $9 under our mention from a week ago and the lowest total price we've seen. (It's the best price now by $21.) It features continuously changing patterns and automatic shutoff after five hours.

Update: The price has dropped to $24.99 before coupon, $19.99 after.