These were various accessories available for the Atari Lynx. Accessories were produced officially by Atari as well as 3rd party companies like Songbird Productions and Naki.
Folds down flat to protect the Lynx screen. Folds up to shade the Lynx screen from sunlight for outdoor play. There is a version for both Lynx models. The top images are for the Lynx II, images below it are for the Lynx I.
Holds a Lynx, up to 24 game cards, and various accessories. It has a padded interior with custom layout Velcro dividers. Carry via a handle or shoulder strap. Original grey colour but ages to become purple.
Connect your Lynx to a 9-pin serial port. Used in the game Crystal Mines II: Buried Treasure, and with S.I.M.I.S. to allow downloading RAM-based homebrew games to your Lynx.
Mounts on the back of the Lynx II, comes with an AC adapter which allows recharging while playing. Comes in 110v (USA), 220v (Europe), or 240v (UK) formats.
Powers the Lynx from any 110v outlet.
Holds a Lynx and up to 20 game cartridges. Nylon with adjustable carrying straps. Comes in Black, purple, or teal blue.
Holds a Lynx, up to 6 game cards, and an Atari Lynx console.
Some of this information is courtesy of Lee Chapman, the admin of the Atari Lynx Fans group.