What kinds of unusual products is Mike testing in this video?

Mike is testing 23 unusual and potentially controversial products in this video. Among the items being evaluated are a spray claimed to make people invisible, a magnet that could potentially lead to legal trouble, and a specially designed basketball that supposedly makes no noise when bounced. These represent just a small sample of the unusual gadgets Mike examines to determine if they're legitimate products or merely scams preying on consumer curiosity.