Are you forever filling and refilling your water glass? I was and it was keeping me from drinking enough. Now I use a big 1 QT Mason Jar (same size as my ferments jars). It fools you into drinking tons of water. Holds 4 cups and the square shape is easy to hold onto with both hands. It has a lid if you want to keep it at bedside (and not get dust in the water). The best part is that it is made of GLASS and not plastic. It keeps the water cold with minimal condensate on the outside. So large, It’s hard to lose also. Only drawback is that it doesn’t fit the drink holder in my car. 😉