Here is a homemade thermal flask that lets you store and carry your drink around easily. The Kole is an elegant product small enough to fit in your pocket. It can be used to store your hot or cold drink. The developers have used oak wood and handcrafted stainless steel to build this flask. The Kole holds up to 4 espresso shots. You also get a stainless steel funnel to fill your Kole without causing any mess.
The Kole is available for as low as $78 on Kickstarter, but you need to be an early supporter.