How do I pick the best sanding kit for my oscillating tool?

Most sanding jobs require a coarse grit and then progressively lighter grits to achieve a polish. A good kit has a range of grits to save you multiple trips to the store.

Will each of these accessories fit my oscillating tool?

Though many tools look and function quite similarly, some kits only fit certain tools, so be sure the one you purchase explicitly fits your brand or model.

Is there a blade that can cut through any material?

To preserve your equipment (and get the best results), be sure your blade is rated for use with the materials at hand. For example, some blades designed to cut metal are not suited to cut softer materials because the blade is too coarse and could warp the lighter materials.