Cooking.com cuts up to 86% off a selection of items in its Clearance section. (Although the sale notes discounts up to 75% off, we found stronger discounts within the sale.) Better, yet all orders qualify for free shipping via coupon code "C92247". Together, that's the strongest discount we've seen from this merchant in almost a year.

A best bet is the Bodum 8-oz. Anywhere Travel Mug in Purple for $3.99 with free shipping via the above coupon. That's $10 off and the lowest total price we could find. It's designed for hot or cold beverages.