For those of us who use a lot of Dremel, These kits come with many tips that are expensive when purchasing OEM. Both Lowes and Amazon carry them. I like them because of the 1/2 inch sanding drums.
Yes, you will get additional tips, you may not need, but considering the price point - might be worth it. They've saved me some money.
https://www.amazon.com/Jorgensen-Rotary-Tool-Accessory-Shank/dp/B0BSVRW6M6
https://www.lowes.com/pd/Jorgensen-Jorgensen-160-piece-Rotary-Tool-Kit/5013511461