The Vacu Vin Wine Saver extracts air from your open wine bottles and re-seals them, keeping them fresh for up to 10 days after opening. With 4.7 star reviews and a a price tag under $7.50, even occasional wine drinker should give it a look. [Vacu Vin Wine Saver, $7]
If you don't own a fireproof safe, this one has 4.5 stars, and is only $17 right now. That's a small price to pay to protect your important documents in the event of an emergency. [SentrySafe 1200BLK Fire Chest, $17]
Update: Sold out
It's no secret that Anker makes some of the best external chargers around, and two of their larger capacity models are marked down to great prices today.
Anker Astro E4 13000mAh Dual USB Portable Charger ($30) | Amazon
Alternatively, you could trade a little bit of capacity for an LCD display and Wirecutter stamp of approval with the Intocircuit Power Castle. [Intocircuit Power Castle 11200mAh Charger, $30 with code YBURK9FK]