Walmart offers the Remedy Natural Pedic Memory Foam Wedge Pillow for $22.49. Opt for in-store pickup to dodge the $5.99 shipping charge. (Amazon charges the same with free shipping for Prime members, although it may take up to three months to ship.) That's tied with our mention from last week and the lowest price we could find by $13, outside of the mention below. It's designed to elevate the head and open up the breathing passages.

A close price: Home Depot charges $23.16 with free store pickup.