Double Walled Ceramic Coffee Cup, by Kikkerland $10
Instead of throwing out that Starbucks cup every day, use this ceramic version by Kikkerland. The silicone lid looks just like the plastic version, too! You could even swipe a stash of sleeves and everyone will think you are SO trendy. Only you will know you're being green. That is, unless you want to show off your cool new coffee cup, which I think is even trendier.