As one of its daily deals, PricePlunge offers the Vent-Miser Programmable Energy Saving Vent 2-Pack in Brown or White for $7.99 plus $2.99 for shipping. That's $5.49 per vent and $5 under the lowest total price we could find for two of these vents elsewhere. They feature timers that can be programmed to shut off in unoccupied rooms and force air into other parts of your home as needed. They can be mounted in the wall, floor, or ceiling. They're available in 10x6", and 12x2", 12x4", although not in all size/color combinations. Deal ends today.
If you're at least 62 years old, you can score a $10 lifetime pass to America's federal parks and recreational lands. But act quickly because fees are about to jump.