Much like setting up intricate patterns with dominoes to watch them topple, setting up a track that a marble can run through can be mesmerizing. The more complex the set-up, the more dazzling it is to watch the marble roll down the tracks. After much planning, work, and numerous failures, this video shows us what may well be the first marble run which includes an underwater elevator, and will have your eyes darting in search of the tiny sphere.
There is a limited availability of innovative products in India. They are either not available online, nor can you buy them by paying in...