I carry my Bobble bottle everywhere, around the office, to every meeting, while working out, on the go, you name it!
I find that keeping a bottle of water near me at all times really helps me reach my goal of drinking two litres of water a day.
This size holds up to 550ml so I try to fill it up three times per day, plus I drink two cups of matcha tea in the morning, which gives me my total of 2 litres.