Vacu Vin Wine Saver | $7 | Amazon

Update: Sold out, sorry.

Raise a glass to this kitchen gadget that essentially pays for itself in one use. The $7 Vacu Vin Wine Saver sucks all the air out of your unfinished wine and keeps it fresh for up to a week. As a person who would normally re-use the original wine cork to seal off leftover wine, this works about 9,000 times better and saves me from the instant regret of drinking wine/vinegar hybrid.