Small oplishers are available and they work really well. I bought one from Harbor Freight and it comes with a variety of pads and discs for attaching various abrasives, including a foam pad and sheep's skin. I used mine to polish my tail lights and it worked great. Mine is a brand called 'Earthquake', but they discontinued it- I have seen others that were the same, with different branding. Mine has slightly different batteries from the ones in the photo, but if you have a smaller battery powered drill, you can use similar pads.
Buy ACDelco Mini Cordless Polisher Tool Set 2 Speed 12V 3” Pad, Set with 2 Li-ion Batteries, Charger, and Accessory Kit, G12 Series ARS1214,Red at Walmart.com
www.walmart.com