iWerkz Foldable Bluetooth Keyboard
The iWerkz Foldable Bluetooth keyboard connects to the iPhone 6 Plus with Bluetooth and the case for the keyboard doubles as a stand. This comes in multiple colors and is one of the highest reviewed folding Bluetooth keyboards on Amazon -- plus it's affordable at $29.99.
This is a smaller keyboard that uses one less row than the Amazon Basics option, but it is smaller and more portable. You can enter numbers without a special function key, use shift for punctuation and a function key for shortcuts. There are many color options including red, blue, white, black purple and camo style design.
$29.99 at Amazon