I recently came across this from Ridged:
It isn't really cheap, but it sure would have been handy for fishing around inside walls and...
You would think they would have given it a bit more resolution and the ability to take pictures. But then they wouldn't be able to come out with an improved model I guess a few months later.
I found it for sale on Fastenal's website, ~$280.
The Stanley Laser measures, TLM series (100, 200, 300) would be really cool to have if I was still running conduit. It seems like my one inch wide tape measure was never quite long enough to reach what I wanted. See:
Too pricey to have around nowadays for occasional use. Around ~$100 for the TLM100 version.
So what else is out there that we really don't need, but would be cool to have?