My favorites are the 24 x 36" cutting mat, Martelli rotary cutter, 6 x 24" ruler, Elna 7200 sewing machine & my Voyager 17 quilting machine with ProFlex frame.
My least used is my Alto Quilt Cut II but I plan to use it one of these days. I bought it to cut scraps but have been using my scraps for swap blocks instead of a scrappy quilt. I recently made a bunch of Jewel Box blocks from scraps and only after I had cut them all did I remember the Quilt Cut!