I recently got this awesome tree stamp from Close to My Heart. You can stamp the background circles in one color, and then the accent patterned circles in another. Here I played around with green and brown.
Products used -Patterned papers: jillibean soup; Stamps: Close to My Heart (tree, star); Tools: Cricut CTMH Art Philosophy cartridge
This card was designed using a sketch from Allison at Sketch Support. You can find more inspiration over on their blog!