Something I found interesting but completely useless is that the trim switch on the control wheel, one of them is a ground and the other moves the trimmer. So if you put one up and one down the trim will still move because the ground is grounded. Same for aileron trim but I didn't try that one.
Something that was told me in training that is somewhat accurate is that the max altitude increases 100ft every 7 minutes, so I use that calculation for advising ATC when we will be able to climb.
In our base airfield when coming from the south there is another ATIS with the same frequency, we found that adding a .05 to the frequency allows us to receive the intended ATIS.
The upper and lower displays are not aligned perfectly.