Backlighting can reveal detail in translucent items; think glass, plastic, liquids and thin materials.
Think about how you might backlight your subjects; it might be window light, a torch, flash, or a desk lamp. You might light your subject from behind, or from underneath. Use a tripod if you have one to lock off your camera, and move your subject and light to experiment with your results.
Your challenge this week: Pick your translucent subject, choose your lighting source. And create a brilliant, backlit image.