I made a birthday card recently where I used the same two stamps repeatedly in different colors in order to create the overall effect I wanted. Since they were branches, I stamped them in three shades of green going from light to dark:
Notice also that I went off the sides of the card. None of those plant stamp images are fully on the card. Also, I changed the direction of how I was stamping each time I re-stamped so it wasn’t the same image facing in the same direction each time. This creates more of a wild effect which I like.
Take one of your favorite images and try using it repeatedly in different colors. You might like what you end up with.