1. Try autobracketing and put the photos together in whatever editing software you use, or

2. Deliberately underexpose and overexpose photos (and see what you get)

3. Take the same photo with different apertures (but the correct exposure)

4. Take the same photo with different shutter speeds (but the correct exposure)

5. Try a long exposure

Yes, these are all related to taking photos but vary how you take the photos using different camera settings.