Do you ever find that after you discover a new technique, you start linking that technique with a specific subject? For example, I have found that after using pans and swipes on tall vertical trees I tend only think of using that technique for trees. While it works well for trees, it can work well for other subjects (if I think of it). One thing that helps is to abstract and associate techniques with the abstraction. For example, tall pine trees can boil down to strong vertical lines.
While lying on the ground shooting hostas emerging from the ground yesterday, I was able to abstract and see it similar to a forest of vertical lines. I have included a couple images from that shoot here along with a forest shot from the past.
There are a lot of other possibilities during spring - grape hyacinths can look like tall trees with purple foliage when viewed from the ground. So get out there and see differently – abstract and try something you never would have before with a subject.