Walmart has the Hyper Tough 208-Piece Rotary Tool Accessory Kit with Storage Case (AU50041A) on sale for $8.50 with free shipping with Walmart+ (30-day trial) or on $35+. Includes:

• 20 sanding bands, 1 cloth wheel, 6 felt wheels, 1 rubber emery wheel
• 3 HSS drill bits, 2 sanding shanks, 4 diamond cutters, 3 HSS cutters
• 10 grinding wheels with shank, 12 grinding wheels, 3 nylon brushes
• 3 wire brushes, 3 brass brushes, 1 polishing compound
• 30 heavy duty cut off wheels, 46 regular cut off wheels, 44 sanding discs
• 4 replacement collets, 2 mandrel cut off wheels, 1 mandrel for cloth wheel
• 1 mandrel for felt wheels, 5 fiberglass cut of wheels, 1 flap wheel and 1 wet stone