I like the convenience of these glass jars. However, with the limited size of the lamp, I have to keep these jars close together. Otherwise I would just not use the lamp and strategically place these jars apart.
The wick helps the vegetables stay fresh, but I've noticed I had to change the water quite often.
It is a nicer setup than if I put roots into a glass jar at home, although it would be cheaper to use what you already have.