Scott Macaulay ... fixes vacuum cleaners for a living. This is the 28th year that Macaulay, 52, is hosting Thanksgiving at a Baptist Church in Melrose for people who have no other place to go. They might be widows, or new arrivals to this country, or poor. Some are simply lonely, like the elderly woman with Parkinson's who arrived one year in an ambulance from a nursing home. Every year, Macaulay fashions a living room-dining room tableau inside the First Baptist Church fellowship hall. Except for the occasional small donation, Macaulay finances this all himself, and even though he's frugal, it still costs him more than $1,000. As soon as one Thanksgiving dinner is over, he starts saving for the next, despite his own financial struggles. Still, he's never skipped a dinner, not the year with the ice storm, not the year he passed out while driving, had a car accident, and was rushed to the hospital, where he got a pacemaker. He didn't even cancel it this year, after getting word last Friday that the church ovens were broken and wouldn't be fixed on time. He simply arranged a late switch to the Green Street Baptist Church. The largest crowd he's had was 89 people. He's refined and expanded the menu over the years; it now includes frozen meatballs as the hors d'oeuvres and canned fruit cocktail with a daub of pink sherbet. It's fabulous," said an 88-year-woman, a widow "many, many, many years," who ... goes to Macaulay's meal every year.