A favorite theme for me, always, is leaves.
Here's some I did for my journal. Having spent quite a bit of time in Hawaii, on Maui, tropical leaves are some of my very fav. Here's a couple I drew on ledger paper with colored pencil, cut out and stuck on journal pages with acrylic gel medium. The backgrounds are acrylic and I was experimenting with light and dark backgrounds with similar subjects. Which do you like better?