I'm looking for a special serial mouse. I distinctly remember getting one as a kid for the NEC APC III (weird XT clone) that I inherited as a hand-me-down, but 10 year old me never got it working. But every time I look for one, I never can seem to find one. Hell I can't even seem to find a picture of it, HOWEVER they made landline phones in the same style:

It is NOT the obvious ones you see on google. It was a no-name brand (that I can remember), and it was a normally shaped, clear mouse with neon plastic parts inside.