two is Too many remotes.

Since the Fire TV stick has no usable USB port to speak of, we can't just plug in an IR dongle.

Some people have had success using HDMI-CEC and their TV remote control. However, my Olevia 232 TV doesn't seem to support the CEC protocol.

Has anyone had any luck using a BT keyboard, or PS3 remote? Has anyone tried using a Harmony PS3 adapter, or IR2BT bridge?

My thoughts were to build an Arduino device using BT shield setup to use the keyboard profile or Joystick profile; and couple that with an IR receiver.

Links:
[Link: remotecentral.com]
[Link: remotecentral.com]
[Link: duckduckgo.com]
[Link: universalremote.com]