Do you remember which ones you had? Before phone companies wanted you to buy a new product every year, Nintendo pioneered the concept of redesign after redesign without actually adding to the product until further iterations. Personally I had the OG grey, Lime green Gameboy Color, See-through purple Gameboy Advance, Red Gameboy SP. Glad They did not have the DS on this list.
A Gameboy Advance SP. It can be used, without box, with charger, and no scratches, both on the screen or outer surfaces. I'm looking for either the Pikachu, Retro, Kindgom Hearts, Zelda, or regular Blue (not sky blue) or black versions.