How about a set of wireless headphones?
It may be an unusual gift choice for Mother's Day but I beg to differ. In our household, Mom works in the day and takes care of children in the evening. She does a lot of teleconference calls and at the same time, travels frequently. With that in mind, a set of wireless headphones suits her needs. She gets to chill on it during travelling. In addition, she could handle her teleconference calls on it while multitasking with her free hands. Lastly, she can always put the headphones on to turn on zen mode when the boys go wild and noisy at home Now that is what I will call a practical gift.