The best father's day gifts are not necessarily expensive, but the ones that show dad that you really know what he likes. Personalized Father's Day gifts can do just that. If dad is the grill master when the weather is warm, load him up with grilling tools - spatulas with his nickname or initials on them, branding irons for the steaks he cooks so perfectly, an engraved cutting board. These unique Father's Day gifts under $50 will always be remembered as presents that were personal creations just for him.