As additional equipment, we recommend that you have enough sandpaper in stock that fits the machine. There is nothing more tedious than being in the middle of a job and not being able to continue sanding because you have run out of sandpaper. We would also keep different thicknesses of sandpaper in stock so that you are prepared for different types of work.
On the subject of safety, it is advisable to buy gloves, respiratory protection and safety goggles if these are not already supplied by the manufacturer.