Google will be your friend ... try different combinations of what you want.
It will take some time, but you'll have a lot of patterns as a result, for this project and many more.
I know I have seen lots of the type you mentioned, though have never kept them, as I didn't anticipate a need.
If the size is not right, just change the scaling on your printer or via photocopies.
I do that all the time, to get what I really want.