Plate, Modified 2 x 2 with Tow Ball

Plate, Modified 6 x 6 Octagonal with Open Center and 4 Clips (Horizontal Grip)

Plate, Modified 1 x 2 with Angular Extension with Molded Flexible Light Bluish Gray Tip Pattern

Plate, Modified 1 x 2 with Clip with Center Cut on Top

Plate, Modified 2 x 2 with Tow Ball Socket, Short, 4 Slots

Plate, Modified 2 x 4 with Tow Ball Socket on Top

Plate, Modified 2 x 2 x 2/3 with 2 Studs on Side

Plate, Modified 4 x 4 with Rounded Corners and 4 Feet

Plate, Modified 1 x 4 with 2 Studs with Groove