I tried this so you don't have to: A timelapse of only clouds at a 90° angle.
Clouds rolling by are often absolutely essential to landscape and object timelapses, like this one:
https://youtu.be/G1E3ciZeEuY?t=19m16s
Without clouds, it often gets boring. So, today, I tried to take it to the extreme. This is only clouds. Not even at an angle, just looking straight up.
Eh, well, I guess it makes me some sort of car sick. No need to do this twice, I guess.