This was easier than we thought it would be. We bought a bottle of “rain-x”, which is made to treat car windshields to help raindrops fly off your windshield while driving. We sprayed some rain-x onto an old windowpane of glass that was propped up on some books. Then flicked some water drops onto the glass and watched them bead up. Jim set up the detached flash off to the side of the glass, so the flash would come sideways onto the top surface of the water drops on the glass.
The we experimented with placing different objects and colors under the glass. One of our favorites is the peppermint look that was created when jim slid a box top with a snowflake on it under the glass. And Betsy placed a photo of our son Kenny with sunglasses under the glass to create an interesting portrait.