Note: You may not find this post interesting if you don't like measuring things or determining scale of creatures and objects in games.
So, something I've been wanting to figure out for a while is exactly how tall my character is. My main is an Orc with max Height on the slider, but there wasn't really much of a definitive way to figure things out that I could find at first. Unless they decide to add one in housing, there isn't a measuring stick I could prop up and angle around to determine height.
Then I learned Fire Rune. Fire Rune and its morphs have a 3 meter radius -- the smallest skill I could find with a targeting circle. 3 meter radius = 6 meter diameter. It was a start. Now I just needed to find a tile with enough "fidelity" to measure with. Measuring just pixels wouldn't work out so well, since camera distortion would ultimately screw up the numbers. Ground tiles would help preserve some semblance of scale regardless of camera angle.
I eventually settled on decorative tiles commonly found in Altmer territory. Specifically, on the upstairs landing at The Vaults of Velyn Harbor, as it was much closer to an even-ish number to work with -- 18 "half-tiles" (or 9 full tiles of this pattern) fit inside the 6 meter (or 600 cm) diameter. This gave me a sort of measuring stick: 1 "half-tile" = 33-1/3 cm (roughly -- even with these aids, accuracy is still not exact).
First, I decided to measure my character's foot. It would help with seeing if numbers would agree proportion-wise, and it's the simplest object to measure on my person since it's touching the ground tile and doesn't animate or distort when you're just standing still. With adjustments for pixel error, I came to an estimation of ~44 cm (or ~17.33"). Simple enough. Note, it was also maxed on the slider for character creation.
Height was more difficult due to two factors: Camera distortion, and animation. There isn't really a good lay-down animation players have access to that has their body and legs straight and their feet unangled. The one pose used for some laid-out corpses might work, but players can't do that. /saluteloop would be fine if I could do it laying down to match the ground tile (or if I could find a wall tile and paste the Fire Rune circle on the wall -- but I can't). The best I could do was /sleep2.
After a bit of fiddling around with screenshots, the best estimate I could come to was ~254-255 cm (or ~100"). It compared with my earlier measurement to agree with proportions well enough, but I can still only really call this an estimate until I find a better animation or improve my methods.
Thus, from what I can determine, a max-height Orc is around 8'4" in height in this game. And since most doors are scaled to be something like 1.5x my height (using the bank in Evermore as an example), and it's probably around double my height from floor to ceiling (in the same building)... everything in this game is freaking huge. :P
So, yeah, there ya go. Hope someone finds that interesting.

If someone has ideas on better methods with greater accuracy, ground tiles that have a regular, uninterrupted pattern that's smaller than 18-tiles-per-6-meters, etc, feel free to drop a comment.
Or if the devteam just wants to put a measuring stick in furniture for housing, that'd be handy too.