I scanned them in and took them apart into 80-something little individual icons. Photoshop did NOT enjoy that particular export-to-layers, but we survived! I then took them into Illustrator and I've been playing around with making different repeats. I've really only dabbled in this before, but it's always interesting to me.
I'm really enjoying seeing how much I can stretch & transform one set of little plants! I'm also finding myself looking around my house, visualizing patterns on every surface trying to think of what might look good where..