Vodo-Siosk Bass, the former Jedi Master of Exar Kun, carried with him a staff, much like Yoda did. However, he could use the Force to strengthen the material to the point of resisting lightsaber strikes, and it was rumored that only two lightsabers could destroy the staff.
Which was true. Exar Kun struck his master down with two lightsabers, cutting the staff cleanly in two and splitting his master the same way.
You have to remember, the Jedi aren't interested in blowing up stars or controlling minds or draining life energy or shooting lightning. They are more passive. They could do things like absorb the lightning, counter other Force attacks and maneuvers, disconnect a being's connection to the Force, transfer their power temporarily to friends, and so on.