Bluetooth keyboard for tablet / smart phone?

Question

I have to admit, I don't quite like using on screen keyboard sometimes, especially when typing a long document and I like using keyboards with my devices. However none of the keyboards I have are easy storage for transport and I don't want to lug a full size one around when I'm traveling just to do so. So would anyone know of a good brand / model of a keyboard that can be folded and placed into a pouch for easy storage? Perhaps there's some that roll as well? I'd like something below $50 USD preferably.

Answer 1

I use Logitech K480, a keyboard that can be also used for notebooks, so you reduce the costs, rather than purchasing a keyboard for each gadget

The keyboard has a tiny space, where you insert your smartphone or your tablet, similarly to a dock