My first home made solar gadget involved a pair of motion sensing LED floodlights powered by a 50 watt solar panel with charge controller and 12V SLA battery. Over time I decided to add a few always-on USB-powered LED lights, so the patio is always dimly lit at night. This made the floodlights superfluous so they were removed and another Raspberry Pi webcam put in their place.
I used a large aluminum enclosure for this project, and my new method of using resistors to mount the Raspberry Pi camera to a larger circuit board. This provides a few degrees of flexibility so the camera can be rotated slightly if need to get a level horizon. For the next few months as my tomato plants grow a script will capture an image every day at about Noon. Eventually there may be a time lapse video.