I found one that you don't have to a CF Card for and as said on
http://gameboy-advance.net/flash_car...-powerstar.htm it can play movies, NES games, movies, show photos, e-books, and it even has a cheat fuction.
HERE IS THE LINK TO THE SHOP:
http://linker4u.com/pp/item_detail.asp?itemID={F7732E8A-DE5F-401F-81DF-29793809ED30}#