Amazon offers its Prime members the Thermos 12-oz. Stainless Steel Can Insulator in Gunmetal Grey, model no. 2700TRI6, Charcoal, model no. 2704CH6, or White, model no. 2704WH6, for $9.99 with free shipping. (Non-members can spend $35 or more to qualify for free shipping; otherwise, shipping costs $6.25.) Outside of the price below, that's the lowest total price we could find by $6, although we saw it for $2 less in October. It purports to keep drinks cold ten times longer than a bare can.

Orders placed by December 22 are guaranteed to arrive in time for Christmas via Prime shipping; otherwise, choose Standard shipping place your order by December 19 for guaranteed delivery. Don't have Prime? Zoro offers it in Gunmetal Grey for $10.81 with free shipping. (It's not guaranteed to arrive by Christmas from Zoro.)