"n' that's when i knew it was a pretty good sign
that something was wrong up on cloud number nine"
~ Bryan Adams song
If you need some clouds, and to be more precise about 9 of them for your projects you could be interested in this set of CU clouds.
I am sure there is nothing wrong up on my cloud number nine. They are all in 300 dpi . There are mostly in 2200 x 2200 but also in 3600 x 3600 so you can even use them on your papers.
This product is for CU.