Gifts Novelty and Souvenir Market Size & Forecasts 2026-2035, By Segments (Product Type, Price Range, Distribution Channel, Material, Occasion), Growth Opportunities, Innovation Landscape, Regulatory Shifts, Strategic Regional Insights (U.S., Japan, China, South Korea, UK, Germany, France), and Competitive Dynamics (Hallmark, 3M, American Greetings, Gibson Innovations, Smiffys)