Amazon has the Tacklife 14" Rivet Gun Kit for $60 - $15 off with coupon CLY7SUV4 (Ends 1/17) = $45 with free shipping. Kit includes a 14" hand riveter with double compound hinges and carbon steel handles, seven interchangeable mandrel/nose piece sets, 35 metric and SAE rivet nuts, multifunction spanner.
Has excellent Amazon Reviews.
Amazon has the Dremel 7-Piece Sanding and Polishing Kit for $12 withfree shipping on $25+ or with Prime. List price: $28. It includes two detail abrasive brushes, two abrasive buffs, a polishing cloth, polishing compound, and storage case, fully compatible with existing Dremel mandrels EZ402 and 402.