Here is a video camera that lets you see into tight spaces on your smartphone conveniently. ScopeAround comes with 3 interchangeable camera heads. The Fit is designed for cosmetic use. The Focus lets you use the ScopeAround as a microscope. The Flexible head lets you inspect tight spaces and take on repair jobs.
ScopeAround records to your smartphone through WiFi. Switching camera heads is easy. The camera has a LED light for dark areas. Yet another an interesting Kickstarter project.