Knee pads are a very good investment for indoor volleyball if you are playing competively...other more obvious things are a volleyball net and ball.
a volleyball volleyball court net antenna knee pads volleyball cart post padding volleyball shoes wrist support hand support thigh support Ice/heat packs shoulder pads elbow pads back support ankle...
ball, net, tennis shoes, knee pads, and wrist protector
If you want to know what the equipment is for you a Ball, Kneepads, A net, Some other people, and tall socks, and clean shoes
Volleyball equipment is mostly a volleyball and net. If you play on a school team you would probably need knee pads and volleyball shoes.
net, volleyball, jersey (aka shirt) and spandex shorts, knee pads