The first one is a small piece of plastic, known as AGB-016 or 6PIN Protection Cover. It is still being sold in the Nintendo Online Shop and protects the Game Boy Advance SP screen when an e-Reader+ or an e-Reader with a link cable port is plugged in. Actually it is a very useful little accessory with the only drawback being it has to be fixed permanently on the e-Reader. The e-Reader then won’t fit anymore in the original Game Boy Advance.
A second-hand Neo Geo X was in the mail this weekend. Best thing about it is (besides beeing cheap) there are no signs of use, just some minor damage at the packing materials and some fingerprints on the glossy Screen.