Second, do any of you electronics experts know if it would be possible and economically to make?
Many older laptops and desktops lack Bluetooth capability. There are many USB plugins that will provide the function, however, laptops have very limited USB (and HDMI) ports of necessity. There just isn't enough physical space for them in the case. USB hubs have long been available to increase the number of ports and some HDMI hubs are available. I have not yet found a BT dongle that will work on any of my USB hubs and I have no space on my older HP laptop, thus the question.
