The Halloween Festival has been running for a few years now and is always excellent and always well supported
https://www.google.co.uk/search?client=safari&sca_esv=575789519&channel=iphone_bm&q=paisley+halloween+festival&tbm=isch&source=lnms&sa=X&ved=2ahUKEwib4L7tq4yCAxVSUUEAHf_yBdMQ0pQJegQICRAB&biw=414&bih=708&dpr=2