I love pretty things, even if I don't like them, I may buy it just because of the color or pattern so I can look at it. Sounds weird, I know. So, I have a few colorful bottles, baskets, pillows, etc. that I really didn't need, but couldn't just leave it there because it was too pretty!!
Railway locomotives, wagons and other rolling stock. I buy kits and modify ready-to-run. As long as they're relevant to the North East of England, or might have been seen in the region, they're worth buying. I might buy a wagon or other railway vehicle at an exhibition - second-hand or unused - buy an underframe kit and 'marry' the two, add scale couplings and maybe change the wheels (or paint them if they're too shiny), numbers and letters might be changed according to year of build etc. Keeps the brain and fingers active.