Coffee presses are flexible and easy to bring on the trip! This coffee press has a lower capacity of 0.45 litres.
From Amazon
Bodum 11100-01BUS, Black, Tea and Coffee Press, Plastic Insulated Travel Mug, 15 Ounce
OnBuy
Bodum Insulated Stainless-Steel Travel French Press Coffee And Tea Mug, 0.45-Liter, 15-Ounce, Black