The most important piece of equipment students need for this course is a working musical instrument. Quality musical instruments are expensive for a good reason: they are precision-built performance machines.
Most students rent an instrument from a local music store. If you are interested in buying instead of renting, it is often better to buy a used quality-brand instrument instead of a new off-brand instrument.
After an instrument, a music stand is probably the second most important piece of equipment a musician should own. A genuine music stand promotes healthy playing posture. Other materials are specific to each instrument.