Check out tindie - there is a solder party blackberry keyboard with a track pad. No display. If the display is important to you, then look at the TTGO-deck - a larger device but it has both keyboard & pointer.
These things have unfortunately been sold out for a while. Not only that, if I wanted to use the BBQ20 with my phone I'd have to connect it to a BLE chip and a battery which is way more hacking than I wanted to do on this project.