If your Game Boy Advance SP needs a new charger or you want USB charging lead to use on this go then we should have just what your looking for with loads of Gameboy & Advance accessories.
Screen Protector Film For Gameboy, Color, Advance & Advance SP Consoles
2 Player Game Link Cable For Nintendo Gameboy Color
Nintendo GameBoy Colour Replacement Battery Cover (GBC)
Gameboy Colour Screen Plastic Lens (GBC)