Walmart discounts a selection of clearance items in its Fall Clearance Sale. Choose in-store pickup to avoid the $5.99 shipping fee, or get free shipping with orders of $35 or more. A couple of best bets:
Sylvania 9" Swivel-Screen Portable DVD Player with Earphones for $39.99 (low by $29)
RCA 49" 1080p Flat LED HD Television for $219.99 (low by $56)
You don't even need an AARP membership card to qualify for the "senior" discounts at these retailers.