Went through my collection and found this old WotC Belgium contact info card. I have no idea if this actually something people collect or not, but AFAIK it's an official pokemon card. :
Pokemon Shadow Box Gifts Charmander VS Squirtle Mini Game - Etsy
Amazon.com: MEGA Pokémon Action Figures Toy Building Set, 4 Inch Pikachu, Raichu and Pichu Build n Show Pikachu Evolution Trio with Poke Ball Pin : Toys & Games