are there any mike ceiling hangers?

I haven't heard of anything such as a "ceiling hanger" for a mic, not to say that there isn't something like that developed. 

I have used (and continue to use) "heavy" mics on a boom arm, I just weigh down the mic stand to off-set the tipping.  

Many here have come up with a lot of ingenious ideas to make it work. Such as the weights from a "weight lifting set" concrete blocks, etc.

If you come up with a "ceiling hanger" post your findings here.

I've used these: flange   --mounted directly to the ceiling with a boom arm.

If you google microphone flange you'll come up with all kinds of cool stuff.

unless it's a tube mic (which you're saying it's not) then there won't be any difference in the sound between hanging it upside down verses right side up.

tube mics or any mic which have high heat dissipation in them will sound different depending on the orientation.  some tube mics it is recommended to hang them upside down in order to keep the heat from rising to the diaphram.