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.
2 Player Game Link Cable For Nintendo Gameboy Advance & SP
Screen Protector Film For Gameboy, Color, Advance & Advance SP Consoles
Nintendo Gameboy Advance Replacement Battery Cover (GBA)
Gameboy Advance Replacement Screen Plastic Lens (GBA)