In my A5 pattern book which I often use for my morning art sessions (but not just for that) I have been fascinated with what I like to call opposites. It's where the pattern on the left page is in one form or another the counterpart of the page on the right.
Here's what I mean:
I like how after al these years I am still not done experimenting with these pattern drawings on squared grid paper. I never tire of them and I keep getting differend ideas that always start with 'what if?'.
All these were done in felt tip pens by the way. Still my favorite medium to work with when I draw patterns.
Hope you are enjoying something so much you can just keep playing at it forever, and wishing you a wonderful and artsy day.